In Saint-Basile-le-Grand, on the South Shore, a co-owner of a condo located in a recent residential complex near McMasterville contacted our services after confirming a bed bug infestation in his unit. Beyond the insecticide treatment, mattresses, box springs and textile surfaces contaminated with droppings and bed bug moulting required careful decontamination to ensure the complete removal of allergens and biological residues that persist long after the insects died. Our team in Saint-Basile-le-Grand took charge of the entire file with an integrated approach combining heat treatment and targeted chemical decontamination. The bed bug decontamination service is a specialized intervention that requires special skills and equipment to be effective in the long term. At Nova Extermination, we are known for our complete interventions in condominium settings on the South Shore.
Assessment of infestation and residual contamination
Initial inspection confirmed the presence of bed bugs at all stages of development: adults, nymphs of various sizes, and tiny eggs clustered in the seams. The main points of concentration were the headboard, the seams and gussets of the mattress, the wooden frame of the box spring, and the baseboards adjacent to the headboard. Characteristic faecal stains, in the form of small dark brown dots that were difficult to wash, were visible on the mattress cover, bedding and painted walls behind the headboard. The density of the infestation and the diversity of the stages of development observed suggested a presence of several months, probably introduced during a trip or the purchase of second-hand furniture. The health risk lay not only in nocturnal bites and sleep disturbances, but also in allergic reactions related to the proteins in the exuviae accumulated in textiles, reactions that can become chronic if the allergens are not physically removed. Our bed bug decontamination practices regularly document this type of case in a condo setting.
Heat treatment and surface decontamination
The preferred method for bed bugs is heat treatment : heating the entire unit to 52 degrees Celsius for at least four hours eliminates insects and eggs at all stages of development, without chemical residue or risk of resistance. Temperature probes distributed throughout the room confirmed that the lethal temperature had been reached in the least accessible areas, particularly inside the frame of the bed base and behind the baseboards. Simultaneously, the mattress and box spring were subjected to industrial deep suction of the seams and folded areas, followed by the application of an enzymatic disinfectant to the non-textile surfaces of the bed frame. Walls, baseboards and electrical outlets have been applied with amorphous silica-based residual insecticide, which is safe after complete drying. This combination of methods ensures maximum efficiency even in condominium units where shared ductwork can promote insect migration. Check out our related preventative work to see how to prevent reinfestation in multi-unit buildings.
Protective enclosure, validation and recommendations for the condominium
At the end of the heat treatment, the mattress and box spring were wrapped in certified laboratory-quality anti-bed bug covers. These covers prevent recolonization of textiles and facilitate visual detection during future inspections, as the bugs cannot camouflage themselves or lay eggs in the protected seams. The peeled skirting boards were re-glued and the cracks in the walls sealed with a soft white putty. A follow-up inspection was conducted two weeks after treatment to confirm the absence of any residual activity. The co-owner was advised on the measures to take when buying second-hand furniture and when travelling, two common vectors of introduction into condos. Our team also contacted the condo corporation to recommend a preventative inspection of neighbouring units, a common and effective practice to contain infestations before they spread to the entire building. Additional unsanitary cleaning was proposed for storage areas with excessive material accumulation, which encouraged hiding places and complicated future inspections.