Ugh Mites... Help please?

[AwesomeGuy376]

So today i found out my boa has mites... wonderful. Luckly, the store thinks he had them while he was in their possession, so i got free reptile spray and prevent-a-mite. As a relatively new owner, i do have some questions. but first, this is what ive done so far-
-Taken everything out of his enclosure
-Sprayed prevent-a-mite and 5%Bleach 95%water (Let it sit for 45 mins)
-Changed substrate to paper towels
-Sprayed his body with reptile spray and massaged it in 3 times
-Tried to pick mites out from under his chin (Only got one.. He wasn't liking it)
- Sprayed my hognose and changed his substrate, also sprayed cage with prevent-a-mite
-Sprayed the boas things with prevent-a-mite and soaked them in hot water
- Sprayed my desk with the bleach and water, and cleaned the entire room. Sanitizing everything around the enclosure.

The only thing i didnt use chemicals on was his water dish. Right now hes in his cage with one climbing log (The only one that didnt smell like prevent-a-mite) and his water dish.. His hide still smells strong of prevent-a-mite, so i cant put it in.. I made a tent out of paper towels for him though. Anyways, on to the questions-

1. What are the chances of my Hoggie having mites if her cage is right next to the boas. Ive only had her since tuesday.
2.When i put the boa in the cage, he went right for the soaking, is this normal even after the treatment?
3. Do i have to find every single mite on this snake and pick it out, or will they die on their own through this treatment, because he will not let me get under his chin for very long...
4.chances of death?
5.How long does my poor snake have to suffer?
6. How long till i should switch back to normal substrate?
7. Will spraying his decorations be enough to kill the mites? I cant get all the dirt off the logs cause.. well, dirt gets stuck easily as you know
8.The bleach smell was somewhat strong in the room, the herps were on the bed in cases while i was doing this, did i harm them with the fumes?
9.Chances of them coming back? and where do they come from?
10. Do you have faith in me to do this :P