With the arrival of warmer weather, many homeowners in the UK may notice an increase in rat activity in their gardens. While natural deterrents such as peppermint oil, cayenne pepper, and vinegar can initially help, they may be washed away by rain, allowing rats to return. For more serious infestations, homeowners often resort to rodenticides. There are two types: first-generation anticoagulants (FGARs), which are less toxic to non-target animals, and second-generation anticoagulants (SGARs), which pose a higher risk to wildlife and pets. The Barn Owl Trust advises that poisons should only be used as a last resort after attempting non-toxic methods. To effectively manage rat populations, homeowners should remove food sources, seal entry points, and attract natural predators like owls and foxes. Other methods include using traps, electrocution devices, and, if necessary, biocide poisons like cholecalciferol, which can be dangerous to pets. Overall, a combination of prevention and humane control methods is recommended to manage rat issues effectively.