Prevent mice from entering the house, all breaks, openings and holes should be sealed with metal or cement. All doors and windows should close properly.Tell-tale Indications of Rats and Mice include droppings, urine odors, gnawed holes, massage and gnaw marks, rodent runways, rodent nests, scampering noises and unusual pet behavior. https://youtu.be/m4Xvor1nWkM