All good responses. BUT... I knew someone who had the same issue. She had me inspect her home. It was what I suspected.... Do you have a basement or sump pump open? Have you tested your home for Radon?
Remember why a minor would keep a canary with them in a mine? Canary would die if toxic...
Yes those products work. Dust the coop. I didn't like the idea of putting on my chickens even When I was told I could so I checked them all and found on only one so I gave her a bath in pet shampoo for tics and lice and used a lice comb on her after. She's a silkie though mind you... don't...
I bought and use this Pet Playpen on Amazon.
Keeps all the shavings in and works great. Waterproof bottom and zippered shade screen top for later when I take them outside to acclimate or to keep escape artists in. ;)