Nearly 40 species of snakes can be found in Illinois. Some species are more common than others, most of which are not poisonous and are ecologically beneficial. Snakes are drawn to potential food sources such as bird feeders. They are also drawn to good hiding places such as brush piles, under homes and porches, low hanging bushes, foliage and overgrown grassy areas. Snakes can be found both inside and outside the home. If mice are finding their way into your home, there is a good bet a snake could use the same entry.