What month are roaches the worst?

Cockroaches are worst during warm and humid months, typically from April through September in most parts of the United States, with peak activity often in June through August when temperatures are highest, though exact timing varies by species, climate, and region, and German cockroaches can be active year-round indoors. Roach activity begins increasing in spring, March through May, as temperatures rise above 70 degrees Fahrenheit and overwintering populations become active, with American cockroaches which are large reddish brown often called palmetto bugs emerging from sewers and basements seeking food. Summer, June through August, is worst because heat accelerates metabolism and reproduction, German cockroaches reproduce faster in warmth with one female producing up to 300 offspring, and they forage more aggressively for food and water, plus humidity provides ideal conditions, so infestations grow rapidly and you see more roaches at night. In southern states with mild winters, roach season lasts longer from February to November due to warm climate, while in northern states it is shorter but indoor German cockroaches remain active year-round in heated homes. Fall, September through October, sees a second surge indoors as roaches seek warmth before winter, though outdoor American cockroach activity declines. Winter is generally least active outdoors but indoor roaches remain active near warm appliances. For prevention, early spring March to May is best time for barrier treatments and sealing cracks, with quarterly professional service providing continuous protection.