Two Letters Re: Rourke on: A Mouse in the House? Retreat Pest Control
Jim: There’s a product called “Tomcat” that’s a solid bar of coumarin poisoned feed. It’s less messy and more convenient than D-Con and can be placed outside with little or no risk to non-rodent wildlife. (BTW, coumarin is effectively the same as “Coumadin” – that is, warfarin anticoagulant. The way it works is diabolically clever. The mice eat it and it slowly anticoagulates them until they hemorrhage internally. This induces thirst and they often leave the area in search of water before they die. As another aside, I remember hearing about a rancher in Ely, Nevada who was too cheap …