Pesticidal ear tag

摘要

Articles including eartags provide topical application of a mixture of (1) a macrolide of the avermectin/milbemycin class, such as, but not limited to ivermectin, abamectin, or milbemectin, and (2) a synergist of the aryl aliphatic ether-class, such as, but not limited to piperonyl butoxide, present in (3) a weight ratio of synergist:macrolide that is greater than 1:1. The articles are effective against various pests of domestic animals, including horn flies and buffalo flies.

主权项

1. An ear tag capable of controlling pests of domestic animals, comprising:
a pesticidally effective amount of an active ingredient composition that comprises a) a macrolide component comprising about 8% by weight abamectin; and b) a synergist component comprising about 20% by weight piperonyl butoxide; c) the weight ratio of the synergist component (b) to the macrolide component (a) being greater than 1; impregnated in a polymer resin base from which it can be released, wherein use of the ear tag results in at least 80% control of horn flies for 15 weeks.