Combine an IPM program with a few of these DIY deterrents and repellents, and you can come up with a successful comprehensive plan to get rid of mice naturally. How Poison Works: Most rodenticides on the market today are anti-coagulants.
Rats are rodents that can spread disease, contaminate food and chew up property. Rats burrow in the ground, forming tunnels with one main opening and one or two exits. The 2- to 3-inch wide entrance hole is usually found under a covering like a low plant, mulch or debris. Before closing up burrows, the rats must be eliminated or they will just re-open the holes.
This dislike of rats for Catmint might well be utilized by growing it round other valuable crops as a protective screen. Closely allied to the Catmint is the Ground Ivy (Nepeta glechoma, Benth.), named Glechoma hederacea by Linnaeus. ---Cultivation---Catmint is easily grown in any garden soil, and does not require moisture in the same way as the other Mints. It may be increased by dividing the plants in spring, or by sowing seeds at the same period.