I'm curious about this too. A couple of years ago, we had carpenter bees trying to destroy our front porch. To get rid of them, I signed a 3-month agreement with the pest control company. They sprayed inside and out (package deal). I have four cats, and the first time they were coming I called to ask what needed to be put away (i.e. cat's food, water, etc.) and how long the animals needed to be out. They said what they used was totally non-toxic to anything but insects and I didn't need to do anything. It worked very well and the cats certainly didn't seem affected. That said, it is very possible that birds are different since they are more sensitive. I've been thinking about calling and seeing if I can find out. My concern is that the people I talk to may not really "know" if you know what I mean. It was sure great to have a totally bug free house for 3 months! No spiders, no gnats, no anything that didn't belong.