[racinghamster]

I wouldn`t use the topical mite treatment as hair loss can be caused by other things. Mites generally cause a hamster to scratch a lot, more than would be normal and in doing so, they can cause bald patches and scabs around the face/neck/shoulder areas. Ivermectin (usual treatment for mites by vets) is a nerve agent and attacks the central nervous system of the parasites. It can cause the hamster to become a bit hyper active, so when applying the drop of liquid onto the parted fur, it`s wise to monitor their behaviour for an hour afterwards and be done when the hamster is fully awake and alert. But as said, always check these things are the correct dosage and strength for the animal being treated before putting them anywhere near the stuff.

Now the hay house you mention? Is it one of those heavy-ish huts with the downward pointing straw roof? Personally, given his predicament, I would look for a cardboard shoe box or something similar. Boxes are much lighter, easily chewed and safe. I use nothing else. Turn the box upside down (no floor) so he can dig into the substrate beneath. Cut a couple of exit doors into the box and place some nesting material inside and at the door for him to take in himself. I think this would work better for him. He shouldn`t notice the change if you just replace the house and use the old substrate/nesting to keep his own scent around. x