Richard, No, no, and no. I use liquid landry products, the dryer is properly vented to go outside, my children are grown and don't live in this state. My husband don't do landry and only goes to the shed to get food out of the deep freezer if I'm not there to do it. Plus the powder is ONLY on and around the water heater nothing else. I will do a more thorough inspection of the shed when I get home.