Baiting Traps – Dry pet food can be a very attractive bait for rats, so can nuts, dried fruits and dried meats, such as bacon. These can be attached to the trap with thread, wire or even glue. For rats, soft baits, such as peanut butter and cheese, are not always effective, because the rat can sometimes pull off the bait without snapping the trap. Rodenticides. Rodenticides are the poison pesticides for the killing of rats and mice. Some can be bought at home stores. If the rat population has gotten high, it may be best to contact a licensed pest control professional, as they have access to and knowledge of proper use of bulk rodenticides. Otherwise, it is generally recommended that homeowners use traps to control and eliminate rats. When any pesticide or rodenticide is used, all label directions must be read and precisely followed.