Seasonal · 10 June 2026
Why pest problems spike after heavy Melbourne rain
Heavy rain shifts ants, cockroaches, rodents and spiders because nests flood, harbourage changes and food sources move.
After heavy rain, ants move out of flooded soil, cockroaches seek drier harbourage, rodents leave exposed areas and spiders follow prey. The result is a sudden spike in calls even though the pest problem was already nearby.
The most common entry points after rain are weep holes, under doors, gaps around pipes, broken vents, sub-floor access points and garden beds pushed against the house.
Short-term cleaning helps, but repeated rain-driven activity usually means the exterior pressure needs treatment and proofing, not just indoor spraying.
Need it sorted properly?
Fast, no-obligation quote. Written 6-month guarantee on general pest treatments.
Get my quote →