I may be a little late with my response but here goes. My hubby is a firefighter here but on his days off, he is a "bug man". Whenever he gets ready to treat our house, he makes me take the babies elsewhere for a couple hours and when he treats the yard for ticks and fleas, they aren't allowed outside for a few hours (try getting them to pee on command..LOL!). You are doing the right thing by taking your baby out of the environment until all is clear
Great question by the way!