Um, guys...
Wireless is everywhere. Period. If you have a cordless or cell phone, a pager, a laptop, a neighbor with a wireless internet connection, any telly or radio stations in the area, you're in trouble. With the way technology is right now, avoiding wireless mice would be like feasting on the flesh of rotting animals and then buying your burgers from McDonalds burnt to a crisp because you're afraid of food poisoning.
That being said, wireless mice are a pain in the ass and have made me lose all hope in electronic engineering on a number of occasions.
Jeff