Household pests are a common problem for many homeowners. Ants, with four letters, are one of the most common household pests. They can be found in kitchens and bathrooms, and can be difficult to get rid of. VERMIN, with six letters, are another type of household pest. These include rodents, such as mice and rats, and can cause significant damage to homes. Redants, with seven letters, are a type of ant that is red in color and can be found in many parts of the world. All of these pests can be a nuisance and require professional help to get rid of them.