Fall Pest Alert
Rodent season opens. Wildlife seeks winter shelter. The BC legal bat exclusion window (August 16 – October 31) closes. Cluster flies arrive in older homes. Fall is the single-highest-leverage exclusion season.
Fall in Delta + Surrey is the year's best exclusion season. Rodents and wildlife are actively seeking winter shelter — which means entry points are easy to find because animals are using them. The legal bat exclusion window closes October 31. Rain returns, exposing roofline gaps. The homeowners who schedule a fall seal-down between mid-September and early November avoid most winter pest issues entirely.
Read the full fall pest alert →All four seasons
Rodent season opens. Wildlife seeks winter shelter. The BC legal bat exclusion window (August 16 – October 31) closes. Cluster flies arrive in older homes. Fall is the single-highest-leverage exclusion season.
Spring in Delta + Surrey means carpenter ant swarms, pavement ant emergence, raccoon kits in attics, and the first wasp queens establishing colonies. Early-season intervention prevents summer escalation.
Peak wasp and hornet season. Peak bed bug travel activity. German cockroaches spike in commercial kitchens. Wildlife kits emerge. This is when Delta + Surrey's pest population is maximally active and most visible.
Rodents are established indoors. Attic wildlife is dormant but present. Indoor pest activity (silverfish, spiders, German cockroaches in commercial) increases. Winter is the best season for diagnostic inspections.