A:AnswerI also have two children working in close proximity. Each mouse has its own receiver so the mouse will ONLY work with its specified receiver in whichever laptop it is plugged into. There are definitely no worries there. Hope this helps!
A:AnswerI am pretty certain this is a USB only mouse. If you bought it recently, you might want to return it and search for a Bluetooth specific Mouse.
A:AnswerNo, I don't think it's waterproof...not for that price. I suppose if you're looking for a mouse that's waterproof, you could type that into the search engine and see what comes up.
A:AnswerThe included USB receiver does fit inside the mouse, under the battery door. You'll find the USB receiver here when you first open the packaging. It uses a single AA-battery.