I have to say i totally agree with Matt, it aint worth messing with the potential health of family and pets. I've seen way to many people buying diy products and or taps placing them in areas that are way too accessable to non target species or don't follow the instructions to the letter and wonder why tiddles the family cat is laying stiff in the garden. This is the point they normally call the professionals in and end up paying way over what they would have done by calling us in , in the begining. Atb