Mothballs (Naphthalene ... Vinegar has a strong, acidic odor that can help repel rats and mice. A good method is mixing vinegar and water in a 1:1 ratio in a spray bottle; then spray the solution ...

but they don't repel rodents. This age-old myth has since been debunked, so you don't have to go wasting your money purchasing bags of mothballs if you have a rat problem. The active ingredient in ...