| 摘要 |
Preparations of birdseed are treated with capsaicin or capsaicin derivatives or analogues thereof in an amount sufficient to be unpalatable to animals having capsaicin sensitive receptors. and more specifi cally to mammals such as rodents. These "hot" compounds. extracts or whole plant material containing these compounds may be co ated on, impregnated in or combined (e.g., mixed) with birdseed to repel troublesome mammals which recognize these compound s as "hot". These "hot" compounds, in contrast, will not repel birds because birds do not recognize these compounds as "hot" sin ce they do not have capsaicin sensitive receptors. The invention is further directed to a method or selectively repelling animals h aving capsaicin sensitive receptors, which comprises feeding the treated birdseed or the invention to birds, in an amount e ffective for repelling animals having capsaicin sensitive receptors, thereby discouraging said animals from eating the treated b irdseed. |
