Rats can be a problem in the home. Unfortunately, you may not see them until there is a big problem and it becomes more difficult to get rid of the rats. Rodents can cause a great deal of damage, contaminate food, and carry disease. Even though rats can weigh up to 18 ounces, you don’t always see them. Most people discover rats by seeing signs of their presence. Rats always stay fairly close to their nests, which could be in the yard or the house. Fortunately, there are ways to effectively kill the rats, with the two best ways as traps – including both open and enclosed rat traps – and baits.