Goodluck, I wish you and your snakes the best. The great "Snaker's" on this site really, really helped me when I inherited my 2 BP's with Mites at 12". I knew absolutely nothing about BP's (or snakes really). I no longer have mites and my BP's are thriving at 2 yrs old now and I want to get a Coastal Carpet Python.
I washed, bleached, and sprayed everything in and around the tank area and won the battle. Always have some" PAM On Hand" is my motto.
I live in Canada and had to buy PAM from Ontario for me in BC. It cost about $31 + shipping if I remember. It was worth it IMHO!
Again, goodluck....