Just make sure to tell the kids to immediately tell you (or the fireman) if they ever see a bat on the ground or that doesn't fly away. That it is sick, and could make them sick if they touch it, and that that would mean that they have to get LOTS of painful shots. The reality is that for the most part, you will never see them, or only rarely (if you are outside at night). Another thing you could do is get muscovies--they supposedly also love mosquitoes, and while they are large, they are very, very quiet.