As a bedwetting kid, my mom used to keep a plastic sheet over my mattress, with a regular sheet over it, another plastic sheet and then another regular sheet. That way, if the top sheet got wet at night, we could just strip it and the plastic sheet off, and I would still have a dry sheet and mattress protector under it. I still do that today. I am too restless a sleeper for bed pads to help. How do you protect your mattresses?