Just wanted to contribute an "FYI" about bed wetting by boys, to other mothers who may not be aware of this...
Years ago I adopted an eleven year-old boy, who had suffered many traumas in his earlier life. From my side I became a single mother without previous experience, as I had no children.
Every so often when I would go into his room I would find it smelling simply awful! I made sure the room was cleaned regularly, and did everything I could to figure out what was smelling so bad in there.... After a loooong time (months really), it turns out that my son was bed-wetting and being terribly ashamed of it. He would remove the sheets from his bed, ball them up and stuff them into a chest he had for toys and treasures.
When I found out what was going on we had a long talk. I took him to the pediatrician, where I found out three things.
1. Bed wetting is not uncommon in pre-pubescent boys.
2. Barring some serious disease (not the case for my son), it is inherited from the father.
3. It goes away with the onset of puberty (which was the case with my son).
Meanwhile, my son continued to be extremely mortified and generally refused do anything to "deal with" the problem. These were the options we tried:
1. Using incontinence pants (aka diapers) at night. My son refused to wear these even though I left them in his bathroom where no one would know one way or the other if he had worn them.
2. Wearing an electronic device attached to his waist, which would vibrate and sound some sort of alarm to wake him to go to the bathroom. I think he tried this a couple of times (more out of curiosity about the device itself) but ultimately also decided not to wear it.
3. Covering his mattress with a protective plastic and cotton mattress cover and learning to do his own laundry. This is the option he chose!
Along the way in this adventure, there were many opinions offered to me by others. They ranged from “he is lazy and doesn't want to get up to go to the bathroom at night” or “he is afraid of the dark and doesn’t want to go to the bathroom” to “he has some neurological disorder.” All these opinions were incorrect and the pediatrician was right: at puberty the problem went away.
The moral of the story is: don't assume other "more experienced" people are well informed. Check with medical experts.
Meanwhile, my son became a laundering expert!!