Crickets, like cockroaches, carry with them harmful bacteria. These pests don’t only feed on vegetation, but they are known to eat other dead pests along with their feces. Due to their unhygienic diet crickets can carry with them bacteria that can cause diseases in pets that eat them, like pet lizards. Aside from carrying diseases, these pests are also known to make loud chirping noises at night. This can keep homeowners awake and prevent them from getting restful sleep.