It is known that pests will start to reduce in numbers after summer time, as the weather cools down. This however does not mean that your home is pest free.
When temperature drops down, usually means that homes and offices are much warmer than outside, and animals tends to seek out homes to find nice warm shelters in which to live and breed, due for them it is a very good place to find food and water.
The most common pests that will look to move inside the houses are rodents. Roofs or basement are perfect places for them to live and to breed. Also it it usual to find German Cockroaches in your kitchen. Kitchens are perfect place for them to get food and water as they need.
To reduce this problem, best you can do is call us, keep kitchen clean, reduce access to food and water.