Anytime you put a poison in your yard, you are going to have side affects.
You might kill some of the "pest" bugs but you'll certainly kill the good bugs that eat the bad bugs. Then with no good bugs (or spiders) around, the bad bugs come back in spades and you are usually worse off than before.
I got my chickens and ducks for pest control in the first place, They eat those bad bugs (and the good ones too) and their eggs and meat are much better than what you can get in the store.
I stopped using fertilisers and pesticides years ago and my yard has never looked better. I put in a pond and now have frogs and dragonflies that eat tons of bugs. Planted native species that attract birds, bees and butterflies. People are telling me they are seeing birds here that they haven't seen in decades.
Sorry for preaching, but you can't make your environment better by spreading poison on it.