Rats and mice traditionally nest in low lying areas, often underground or beneath house flooring. Rat burrows are found singly or in groups along building foundation walls, under slabs, in overgrown weedy areas, beneath debris and buildings, and in moist areas in and around garden fields. After heavy rains and flooding, rodent nests are destroyed and although this can reduce the number of rats and mice, surviving rodents then relocate to new areas in search of food, water and shelter. As rodents settle into new areas, they will build colonies and reproduce. It is for this reason that rats and mice are so active after floods and found inside houses. Typically, it takes 6 to 10 months for rodents to re-establish their colonies after a disaster.
Placing traps and bait stations around the home after flooding will help reduce the likelihood of nests developing in homes. It’s also the time to make homes an uncomfortable environment for rodent pests. Sonic repellers are the latest in electronic technology to keep pests away from homes, 24 hours a day. Ultrasonic frequencies, too high for pets and humans to hear, create an acoustically hostile environment for pests. With the home becoming unbearable to rats and mice, the chances of a nest or colony starting are minimal.