There is a bio-friendly insect spray that uses spearmint for it's acitve ingredient. I have bought it at Walmart and seen it for sale at other similiar stores. I have used it safely around my pets and aquariums for years without problems. It is effective on most insects and spiders except cockroaches. It also works as a repellent and has a fresh minty smell.
since someone else already did it:

and some babies
