{"id":13732,"date":"2026-05-11T16:05:20","date_gmt":"2026-05-11T20:05:20","guid":{"rendered":"https:\/\/extermipro.com\/non-classe\/coquerelles-immeubles-propagation-parc-extension\/"},"modified":"2026-05-11T16:05:20","modified_gmt":"2026-05-11T20:05:20","slug":"cockroaches-buildings-spread-park-expansion","status":"publish","type":"post","link":"https:\/\/extermipro.com\/en\/blog-extermination-montreal\/coquerelles-immeubles-propagation-parc-extension\/","title":{"rendered":"Cockroaches: Spread between apartments in Parc-Extension"},"content":{"rendered":"<style>\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800&display=swap');\n\n\/* === Police Inter sur tout le contenu de l'article === *\/\n.elementor-widget-theme-post-content,\n.elementor-widget-theme-post-content p,\n.elementor-widget-theme-post-content li,\n.elementor-widget-theme-post-content h2,\n.elementor-widget-theme-post-content h3,\n.elementor-widget-theme-post-content h4,\n.elementor-widget-theme-post-content blockquote,\n.elementor-widget-theme-post-content strong,\n.elementor-widget-theme-post-content em {\n  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif !important;\n  font-feature-settings: 'cv02','cv03','cv04','cv11';\n}\n.elementor-widget-theme-post-content,\n.elementor-widget-theme-post-content p,\n.elementor-widget-theme-post-content li {\n  font-size: 17.5px !important;\n  line-height: 1.75 !important;\n  color: #2d3748 !important;\n  letter-spacing: -0.005em !important;\n  font-weight: 400 !important;\n}\n.elementor-widget-theme-post-content p { margin: 0 0 22px !important; 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}\n.ep-calendar-legend .swatch-peak::before { background: #c0392b; }\n.ep-calendar-legend .swatch-off::before { background: rgba(0,0,0,0.06); }\n\n\/* === Photo inline avec l\u00e9gende === *\/\n.ep-figure {\n  margin: 36px 0 !important;\n  text-align: center;\n}\n.ep-figure img {\n  width: 100% !important;\n  max-width: 800px !important;\n  height: auto !important;\n  border-radius: 14px !important;\n  box-shadow: 0 4px 18px rgba(0,0,0,0.08), 0 0 0 1px rgba(40,152,64,0.06);\n  display: block;\n  margin: 0 auto;\n}\n.ep-figure figcaption {\n  font-family: 'Inter', system-ui, sans-serif;\n  font-size: 13px;\n  color: #6a7585;\n  font-style: italic;\n  margin-top: 12px;\n  max-width: 700px;\n  margin-left: auto;\n  margin-right: auto;\n  line-height: 1.5;\n}\n\n\/* === Stat callouts (chiffres publics seulement) === *\/\n.ep-stats {\n  display: grid;\n  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));\n  gap: 14px;\n  margin: 32px 0 !important;\n}\n.ep-stat {\n  background: white;\n  border: 1px solid rgba(40,152,64,0.12);\n  border-left: 3px solid #289840;\n  padding: 20px 22px;\n  border-radius: 10px;\n  text-align: left;\n}\n.ep-stat-number {\n  font-family: 'Inter', system-ui, sans-serif;\n  font-size: 28px;\n  font-weight: 700;\n  color: #1a6e2c;\n  line-height: 1;\n  letter-spacing: -0.02em;\n}\n.ep-stat-label {\n  font-size: 13px;\n  color: #4a5568;\n  margin-top: 6px;\n  line-height: 1.4;\n}\n.ep-stat-source {\n  font-size: 11px;\n  color: #94a3b8;\n  margin-top: 8px;\n  font-style: italic;\n}\n\n\/* === Mobile === *\/\n@media (max-width: 768px) {\n  .ep-table { font-size: 13px !important; }\n  .ep-table thead th, .ep-table tbody td { padding: 10px 12px !important; }\n  .ep-meter-label { flex: 0 0 100px; font-size: 13px; }\n  .ep-calendar-grid { grid-template-columns: repeat(6, 1fr); }\n  .ep-calendar-grid .ep-calendar-cell:nth-child(n+13) { display: none; }\n  .ep-figure img { border-radius: 10px !important; }\n  .ep-stat-number { font-size: 24px; }\n}\n\n<\/style>\n\n\n\n<p class=\"wp-block-paragraph\">The spread of <strong>cockroaches between apartments in Park Extension<\/strong> following invisible pathways: plumbing pipes, electrical conduits, cracks in party walls. Dense, multi-unit, historic\u2014Park Extension concentrates the very conditions that turn an isolated infestation into a building-wide problem. A triplex on Hutchison Street or an apartment block near Parc metro station might see a colony of <em>German cockroach<\/em> German cockroach colonizes three floors in less than six weeks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The German cockroach is the dominant species in Montreal residential buildings. Flat. Fast. Nocturnal. It can slip into spaces as narrow as a piece of cardboard. In the area's older buildings\u2014constructed before 1960, with cracked plaster walls and unsealed pipes\u2014every plumbing joint under a sink becomes an inter-apartment highway. Understanding this mechanism is the first step to breaking the chain of contamination.<\/p>\n\n\n\n<div class=\"ep-greenbox\">\n<strong>What to remember \u2014 cockroach infestation in multi-unit buildings in Parc-Extension:<\/strong>\n<ul>\n  <li><strong>The German cockroach (<em>German cockroach<\/em>) spreads mainly through plumbing and electrical conduits<\/strong>, especially in buildings constructed before the 1970s.<\/li>\n  <li><strong>A single infested dwelling can contaminate 4 to 6 neighboring apartments<\/strong> in a few weeks if the passages are not sealed.<\/li>\n  <li><strong>Early signs include black droppings (frass) around the sink, a persistent musky odor, and shed exoskeletons<\/strong> behind the household appliances.<\/li>\n  <li><strong>In an apartment building, a slow-acting transfer insecticide gel (hydramethylnon or low-dose fipronil) applied to all units simultaneously<\/strong> is the most effective method recommended by professionals.<\/li>\n  <li><strong>The landlord has a legal obligation to act according to the R\u00e9gie du logement.<\/strong> \u2014 The tenant must report the infestation in writing as soon as it is first observed.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How cockroaches <span class=\"ep-green\">do they spread between homes<\/span> in an apartment building?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The lateral spread of cockroaches in an apartment building occurs primarily through three physical pathways: the spaces around plumbing pipes, shared electrical conduits, and cracks in adjoining walls. In an unsealed building, a colony established in a ground-floor apartment reaches the second floor in less than a month.<\/p>\n\n\n<div class=\"wp-block-image ep-figure\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/extermipro.com\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Nov-3-2025-06_59_00-PM-geotagged.webp\" alt=\"Technician equipped for intervention in multi-unit housing\" class=\"wp-image-8082\" srcset=\"https:\/\/extermipro.com\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Nov-3-2025-06_59_00-PM-geotagged.webp 1200w, https:\/\/extermipro.com\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Nov-3-2025-06_59_00-PM-geotagged-300x200.webp 300w, https:\/\/extermipro.com\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Nov-3-2025-06_59_00-PM-geotagged-1024x683.webp 1024w, https:\/\/extermipro.com\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Nov-3-2025-06_59_00-PM-geotagged-768x512.webp 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">Technician equipped for multi-unit dwelling interventions \u2014 full equipment compliant with RBQ standards for common areas.<\/figcaption><\/figure>\n<\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\">The <em>German cockroach<\/em> is particularly formidable because it carries its eggs in an ootheca\u2014a rigid capsule attached to its abdomen\u2014for up to 24 hours before hatching. It rarely moves in the open during the day; it prefers confined, warm, and humid spaces. Under sinks, behind refrigerators, in electrical boxes: that's where it moves, unseen, from one dwelling to another.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans les immeubles de Parc-Extension \u2014 notamment les triplex et plex de la rue de Li\u00e8ge, de la rue Ogilvy ou du boulevard Saint-Laurent Nord \u2014 les colonnes de plomberie partag\u00e9es ne sont pratiquement jamais isol\u00e9es entre les planchers. Chaque passage de tuyau non calfeutr\u00e9 repr\u00e9sente une br\u00e8che. Un immeuble de douze logements peut avoir des dizaines de ces points de transit. C&rsquo;est pour cette raison qu&rsquo;une intervention sur un seul appartement \u00e9choue syst\u00e9matiquement : les coquerelles se r\u00e9fugient dans les logements adjacents le temps du traitement, puis reviennent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In May 2025, several residents in the area around Sir-Wilfrid-Laurier Park reported repeated reinfestations linked to exactly this phenomenon \u2013 a partial treatment in a single apartment, without coordination with neighboring units, had left the plumbing corridors intact. The cockroach is a survivor. It bypasses. It waits.<\/p>\n\n\n\n<hr class=\"ep-hr\">\n\n\n\n<h2 class=\"wp-block-heading\">What are the signs of an infestation <span class=\"ep-green\">who is advancing within the walls<\/span> rather than in a single dwelling?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An active infestation in multiple dwellings is indicated by simultaneous signs among several residents: frass (granular black excrement) near water pipes in several kitchens, the appearance of live cockroaches in dwellings with no accessible food source, and an unexplained musky odor originating from the walls. These combined signals point to an established colony within the common infrastructure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cockroach droppings are the best indicator. These small, black droppings, 1 to 2 mm in size, resemble coarsely ground pepper. They are found concentrated around pipe joints, behind electrical outlet plates, and under pantry shelves. They leave slight stains if rubbed. Translucent and fragile exoskeleton molts (exuviae) confirm active reproduction on-site. A brownish, empty ootheca found behind a drawer indicates that cockroaches have been reproducing in this location for at least three weeks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette semaine sur un duplex de Rosemont, un technicien a trouv\u00e9 une colonie de deux cents individus nich\u00e9e dans la cavit\u00e9 derri\u00e8re la douchette \u2014 un espace de 8 cm, chaud, humide, directement connect\u00e9 au mur mitoyen du voisin. Aucun des deux locataires n&rsquo;avait remarqu\u00e9 de coquerelles dans sa cuisine. L&rsquo;infestation vivait enti\u00e8rement dans la cloison.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Other signs to watch for: cockroaches active during the day (a sign of overpopulation - individuals are driven out of their hiding places by density), elongated brownish stains on walls around ducts (pheromonal secretions from aggregations), and presence in unusual places like bathrooms or unfinished basements. These signals indicate an expanding colony.<\/p>\n\n\n\n<hr class=\"ep-hr\">\n\n\n\n<h2 class=\"wp-block-heading\">DIY or exterminator: what approach for <span class=\"ep-green\">stop the spread in buildings<\/span> in Parc-Extension?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In multi-unit dwellings, DIY treatments (over-the-counter products) are not enough to stop lateral spread. Aerosol insecticides drive cockroaches away without eliminating them, pushing them into neighboring units through the same conduits. Professional, coordinated intervention in all units \u2014 or at a minimum, in adjacent units and common areas \u2014 is essential to break the cycle.<\/p>\n\n\n\n<table class=\"ep-table\">\n  <thead>\n    <tr>\n      <th>Criterion<\/th>\n      <th>DIY treatment<\/th>\n      <th>Professional intervention<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>Treatment scope<\/td>\n      <td>Housing only<\/td>\n      <td>Coordinated whole building<\/td>\n    <\/tr>\n    <tr>\n      <td>Products available<\/td>\n      <td>Aerosols, adhesive traps (over-the-counter)<\/td>\n      <td>Hydramethylnon gel, low-dose fipronil, registered insecticides<\/td>\n    <\/tr>\n    <tr>\n      <td>Effect on propagation<\/td>\n      <td>Push the insects back to the neighbors<\/td>\n      <td>Slow transfer: workers contaminate the colony<\/td>\n    <\/tr>\n    <tr>\n      <td>Duct access<\/td>\n      <td>Surface visible only<\/td>\n      <td>Injection into cavities, plumbing joints, electrical boxes<\/td>\n    <\/tr>\n    <tr>\n      <td>Multifamily housing coordination<\/td>\n      <td>Impossible without owner's permission<\/td>\n      <td>Global action plan, owner-planned access<\/td>\n    <\/tr>\n    <tr>\n      <td>Risk of re-infestation<\/td>\n      <td>Very High (colony not eliminated)<\/td>\n      <td>Reduced if all units treated simultaneously<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">Slow-acting insecticide gel is key. Applied in small dots in crevices (under sinks, in outlet boxes, behind refrigerators), it's not detected as a threat by roaches. They consume it, then [they] contaminate their counterparts through contact and their droppings. Within 72 hours, a cascade of deaths is triggered in the colony. But this mechanism is only effective if the gel is applied in each affected dwelling\u2014otherwise, individuals from untreated units quickly recolonize.<\/p>\n\n\n\n<div class=\"ep-callout\">\n\u26a0\ufe0f <strong>Important warning:<\/strong> Insecticide foggers are contraindicated in multi-unit dwelling situations. They spread cockroaches throughout the building via ducts, worsen the contamination of neighboring units, and do not penetrate wall cavities where the colony is established. According to <a class=\"ep-link\" href=\"https:\/\/www.inspq.qc.ca\/zoonoses\/blattes\" target=\"_blank\" rel=\"noopener\">INSPQ (2023)<\/a>, Uncoordinated insecticide use in multi-unit dwellings is one of the main causes of treatment failure and secondary spread.\n<\/div>\n\n\n\n<hr class=\"ep-hr\">\n\n\n\n<h2 class=\"wp-block-heading\">What are the landlord's obligations for a <span class=\"ep-green\">Cockroach infestation in multi-unit dwelling<\/span> in Quebec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In Quebec, the owner of a rental property is legally required to maintain the dwelling in good habitable condition, which includes controlling infestations of vermin. As soon as a tenant reports the presence of cockroaches in writing, the owner must act within a reasonable time. Failure to do so constitutes a breach of their obligations under the Civil Code of Quebec and the R\u00e9gie du logement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Specifically, the landlord must hire an exterminator certified by the RBQ to inspect and treat all affected units, not just the unit of the complaining tenant. They must also ensure access to common areas\u2014unfinished basements, technical rooms, plumbing shafts\u2014so that the treatment is complete. If the landlord delays or refuses to act, the tenant can file a request with the R\u00e9gie du logement to obtain a rent reduction or force the repairs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">From the tenant's perspective, the obligation is to report quickly\u2014ideally by email or certified letter\u2014and to cooperate with access for treatments. A tenant who refuses entry to the exterminator compromises the effectiveness of the global plan and can be held responsible for the continued spread. In a building in Parc-Extension where units share plumbing risers, a single refusal is enough to thwart the entire eradication strategy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The City of Montreal, through its housing standards bylaws, can also intervene if the owner is negligent. A municipal inspector can issue a notice of infraction and order the work to be done. Buildings in the Jean-Talon West sector, bordering Parc-Extension, have been the subject of several such inspections in recent years due to the density and age of the buildings.<\/p>\n\n\n\n<hr class=\"ep-hr\">\n\n\n\n<h2 class=\"wp-block-heading\">How to effectively caulk for <span class=\"ep-green\">prevent cockroach migration<\/span> between apartments?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Caulking transit points is the most effective preventive measure to block the lateral spread of cockroaches within a building. Every pipe chase, electrical conduit, or vent duct that passes through a shared wall or floor represents a potential migration pathway. Filling these openings with acrylic caulk or steel wool (for large spaces) physically cuts off highways between units.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here are the steps for effective preventive caulking in an apartment:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n  <li><strong>Identify all pipe runs<\/strong> under the kitchen sink, under the bathroom vanity, and behind the toilet \u2014 these are the most common entry points.<\/li>\n  <li><strong>Check the electrical outlet boxes<\/strong> On shared walls: unscrew the plate and examine if the cable enters an open space. Seal with an approved fire-resistant product.<\/li>\n  <li><strong>Seal cracks in the floor<\/strong> around heaters and radiators, especially in old buildings with wooden floors.<\/li>\n  <li><strong>Treat the joint between the top of the baseboard and the wall<\/strong> in damp rooms \u2014 bathroom, kitchen, laundry room.<\/li>\n  <li><strong>Do not neglect the space under the doors<\/strong> Common areas (hallway, basement): a door sweep significantly reduces traffic.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">In June 2025, an increase in reports in Parc-Extension coincided with the start of renovations in several buildings on Boulevard de l'Acadie \u2014 the work had opened up wall cavities without prior sealing, releasing colonies that had been established in the partitions for years. Prevention must precede work, not follow it. A certified technician can map transit points before any renovation and recommend appropriate materials according to the type of partition \u2014 plaster, drywall, concrete.<\/p>\n\n\n\n<div class=\"ep-quartiers\">\n<h3>And in the neighboring neighborhoods?<\/h3>\n<ul>\n  <li><a href=\"\/en\/pest-control-villeray\/\">Villeray<\/a> Numerous pre-war duplexes and triplexes on Jarry and B\u00e9langer streets, with plumbing risers similar to those in Park Extension.<\/li>\n  <li><a href=\"\/en\/rosemont-exterminator\/\">Rosemont\u2013La Petite-Patrie<\/a> \u2014 High density of plexes on Masson and Beaubien streets, where inter-unit spread regularly affects rental buildings.<\/li>\n  <li><a href=\"\/en\/exterminator-cote-des-neiges\/\">C\u00f4te-des-Neiges<\/a> Numerous multi-family buildings around Queen Mary Road, with a highly mobile tenant base favoring re-infestations.<\/li>\n  <li><a href=\"\/en\/exterminator-plateau-mont-royal\/\">Plateau-Mont-Royal<\/a> Old apartment buildings on Saint-Joseph Boulevard and Duluth Street with frequent plaster cracks, a classic breeding ground for cockroaches.<\/li>\n  <li><a href=\"\/en\/exterminator-in-outremont\/\">Outremont<\/a> \u2014 Upscale buildings on Bernard and Laurier Avenues whose shared unfinished basements facilitate the discreet migration of German cockroaches.<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Guide complet : coquerelles : propagation entre logements \u00e0 parc-extension. Calendrier, esp\u00e8ces vis\u00e9es, d\u00e9roulement, indicateurs.<\/p>","protected":false},"author":2,"featured_media":13194,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","_elementor_version":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"fullscreen","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false},"categories":[24],"tags":[],"class_list":["post-13732","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-extermination-montreal"],"acf":{"faq_question_1":"Comment les coquerelles se propagent-elles entre logements dans un immeuble \u00e0 Parc-Extension?","faq_reponse_1":"Les coquerelles se d\u00e9placent entre logements en empruntant les conduits de plomberie, les fissures dans les murs, les espaces autour des tuyaux et les prises \u00e9lectriques. Dans les immeubles dens\u00e9ment peupl\u00e9s de Parc-Extension, ces insectes profitent de la proximit\u00e9 des appartements pour coloniser rapidement de nouveaux espaces. Ils peuvent \u00e9galement se propager via les sacs d'\u00e9picerie, les bo\u00eetes en carton et les meubles usag\u00e9s. Une infestation dans un seul logement peut rapidement devenir un probl\u00e8me collectif si elle n'est pas trait\u00e9e rapidement et de mani\u00e8re coordonn\u00e9e dans tout l'immeuble.","faq_question_2":"Quels sont les signes d'une infestation de coquerelles dans un appartement?","faq_reponse_2":"Les principaux signes d'infestation incluent la pr\u00e9sence de f\u00e8ces ressemblant \u00e0 de petits grains de poivre noirs, des \u0153ufs ou ooth\u00e8ques brunes coll\u00e9es dans les recoins, une odeur musqu\u00e9e et d\u00e9sagr\u00e9able caract\u00e9ristique, ainsi que des traces de mue sur les surfaces. Des taches sombres le long des murs et derri\u00e8re les \u00e9lectrom\u00e9nagers sont \u00e9galement r\u00e9v\u00e9latrices. Les coquerelles \u00e9tant nocturnes, les apercevoir en plein jour indique g\u00e9n\u00e9ralement une infestation importante. Les cuisines et salles de bains sont les zones les plus fr\u00e9quemment touch\u00e9es.","faq_question_3":"Pourquoi Parc-Extension est-il particuli\u00e8rement vuln\u00e9rable aux infestations de coquerelles?","faq_reponse_3":"Parc-Extension pr\u00e9sente plusieurs facteurs qui favorisent la propagation des coquerelles. Le quartier comprend de nombreux immeubles locatifs anciens o\u00f9 les infrastructures vieillissantes cr\u00e9ent des voies de passage entre logements. La forte densit\u00e9 r\u00e9sidentielle et la proximit\u00e9 des appartements facilitent les d\u00e9placements des insectes. Par ailleurs, le roulement \u00e9lev\u00e9 de locataires peut introduire de nouvelles infestations par le biais de meubles ou d'effets personnels. Les conditions climatiques de Montr\u00e9al poussent aussi les coquerelles \u00e0 se r\u00e9fugier \u00e0 l'int\u00e9rieur durant les mois froids.","faq_question_4":"Quelles mesures pr\u00e9ventives permettent de bloquer la propagation des coquerelles entre logements?","faq_reponse_4":"Pour limiter la propagation, il est recommand\u00e9 de calfeutrer toutes les fissures et ouvertures autour des tuyaux, prises \u00e9lectriques et boiseries avec du calfeutrant de silicone. \u00c9viter d'accumuler des bo\u00eetes en carton et conserver les aliments dans des contenants herm\u00e9tiques. R\u00e9parer rapidement les fuites d'eau, car l'humidit\u00e9 attire les coquerelles. Informer le propri\u00e9taire d\u00e8s les premiers signes d'infestation est crucial pour une intervention collective. Dans un immeuble, traiter un seul logement est insuffisant si les unit\u00e9s voisines restent infest\u00e9es.","faq_question_5":"Quelles sont les responsabilit\u00e9s du propri\u00e9taire face \u00e0 une infestation de coquerelles \u00e0 Parc-Extension?","faq_reponse_5":"Au Qu\u00e9bec, le propri\u00e9taire a l'obligation l\u00e9gale de fournir un logement salubre et exempt de vermine. Face \u00e0 une infestation de coquerelles, il doit mandater un traitement professionnel dans les d\u00e9lais raisonnables et coordonner les interventions dans l'ensemble des logements affect\u00e9s. Le locataire doit signaler l'infestation par \u00e9crit pour d\u00e9clencher cette obligation. Si le propri\u00e9taire ne r\u00e9agit pas, le locataire peut d\u00e9poser une demande aupr\u00e8s du Tribunal administratif du logement. Une approche coordonn\u00e9e impliquant tous les logements de l'immeuble est essentielle pour \u00e9radiquer durablement les coquerelles.","faq_question_6":"Combien de temps dure un traitement contre les coquerelles dans un immeuble \u00e0 logements multiples?","faq_reponse_6":"L'\u00e9limination des coquerelles dans un immeuble \u00e0 logements multiples n\u00e9cessite g\u00e9n\u00e9ralement plusieurs visites sur une p\u00e9riode de quatre \u00e0 douze semaines. Les traitements incluent habituellement l'application de gels insecticides, de poudres diatomac\u00e9es et parfois des traitements par aspersion. Un suivi est indispensable pour traiter les jeunes coquerelles \u00e9closes apr\u00e8s le premier traitement. L'efficacit\u00e9 d\u00e9pend fortement de la coop\u00e9ration de tous les locataires, qui doivent pr\u00e9parer leur logement avant chaque intervention et maintenir des conditions d'hygi\u00e8ne rigoureuses tout au long du processus."},"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/extermipro.com\/wp-content\/uploads\/2026\/04\/hero-coquerelles-immeubles-parc-extension.png","aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"Dans les multilogements de Parc-Extension, Blattella germanica se propage par les conduits de plomberie. 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