They can be responsible for the spread of diseases such as Weils Disease or Leptospirosis. Salmonellosis, another disease spread by rats, is a type of food poisoning with serious side effects. The presence of rats and mice in food premises, homes, gardens and on farms not only threaten our health but also costs millions of pounds in property repairs. At Aardwolf Pest Control we use four different means of control where rats and mice are concerned. The use of anticoagulant poison is the most common method of control used against rodent pests.