The two main chemicals we use, imidacloprid and dinotefuran, are made to be safer than some other insecticides for humans and consequently other vertebrates. This means it is a low-risk option for pets and other animals. Animals would have to be exposed to large, concentrated quantities of the chemical, relative to their size, to reach toxic levels and have adverse effects. Proper application methods can be used to minimize this risk even further, such as performing targeted applications utilizing optimized dosing strategies, in order to avoid using more chemical over a larger area than is necessary.
Returning NC's Hemlocks to Long-Term Health