![]() ![]() The rodenticide products currently available on the consumer market are ready-to-use bait stations that contain and/or are packaged with a rodenticide bait that is in block or paste form. ![]() Other rodenticides that currently are registered to control mice include bromethalin, cholecalciferol and zinc phosphide. Second-generation anticoagulants registered in the United States include brodifacoum, bromadiolone, difenacoum, and difethialone. Due to these risks, second-generation anticoagulant rodenticides no longer are registered for use in products geared toward consumers and are registered only for the commercial pest control and structural pest control markets. These properties mean that second-generation products pose greater risks to nontarget species that might feed on bait only once or that might feed upon animals that have eaten the bait. These compounds kill over a similar course of time but tend to remain in animal tissues longer than do first-generation ones. Second-generation anticoagulants also are more likely than first-generation anticoagulants to be able to kill after a single night's feeding. Second-generation anticoagulants were developed beginning in the 1970s to control rodents that are resistant to first-generation anticoagulants. Chlorpophacinone, diphacinone and warfarin are first-generation anticoagulants that are registered to control rats and mice in the United States. These compounds are much more toxic when feeding occurs on several successive days rather than on one day only. Deaths typically occur between four days and two weeks after rodents begin to feed on the bait.įirst-generation anticoagulants include the anticoagulants that were developed as rodenticides before 1970. Most of the rodenticides used today are anticoagulant compounds that interfere with blood clotting and cause death from excessive bleeding.
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