Wildlife Damage Management, Internet Center for


Date of this Version

February 1978


Published in Proceedings of the Second Eastern Pine and Meadow Vole Symposium, Beltsville, Maryland, February 23-24, 1978, Ross E. Byers, editor. Copyright © 1978 Hunter.


Very effective control of the short-tailed meadow mice (Microtus spp.) was obtained by means of grass and weed spraying in two orchards with Chlorophacinone. This toxin was applied in one orchard with a boom-type tractor sprayer and in another orchard with a hand-gun nozzle operated from the tractor manually. The anti-coagulant rodenticide in each orchard was mixed in spray tanks at the rate of one pint per 100 gallons water. Spray was directed to an area two feet on each side of apple tree rows applying six pints of the concentrate per treated acre. A five-foot strip of dense grassy area bordering the orchards was also sprayed to prevent mouse invasion. We found no injurious affect to wildlife or domestic animals that were in the vicinity of orchards following toxicant treatment.