To all moms:
Please look into The Potty Pager, a device we used on my children. Like you, I would be up in the middle of the night waking kids and changing sheets. That got tiring real fast so my husband and I started taking turns waking them up twice a night in hopes of getting to them before they wet the bed. We ended up losing sleep and still having instances where they would wet the bed before we got there.
After talking with the people at "The Potty Pager" and telling them my story, the woman flat out told me we weren't doing them any favors by waking them up. We purchased two pagers, one for each kid. My husband and I went cold turkey on waking them up at night. It took about a month to work but they somehow taught themselves to wake up before they have to pee. My husband was a skeptic at first but we're thrilled now. It's been a month and a half since we took them off the pagers (after three weeks of dry nights in a row). They have each only had one accident since and even then, they woke up right as they started to wet the bed so it wasn't like they were soaked through.
I 100% endorse this product. My pediatrician recommended it to us and I love him for it. You can find them at www.pottypager.com or at 1-800-497-6573. Best of all, it's a silent pager so the rest of the house can sleep and the child is not embarrassed if it goes off.
Two final notes. 1. Do not chastise your child for wetting the bed. This is a learning process. Make him responsible for the accident though by having him help bring the sheets and underwear to the laundry room. 2. Invest in a good, breathable but waterproof mattress pad. It's cheaper than buying a new mattress and better than sleeping in something that smells.
Best of luck,
B. (A happy, well-rested mom)