I've had my boa for 10 years and things have always been kept the same for him more or less. Recently upon cleaning out his cage I noticed a few scales (about 10) throughout his cage. They were actual scales and not just pieces of an old shed but I figured it was just a random occurance. I looked him over thinking maybe somehow he had scale rot but everything looked fine. Today, I cleaned out his cage and noticed more than twice the amount of lost scales! I scrubbed down his whole cage with antibacterial soap, changed his newspaper, and gave him a bath.
The only change I have made in his cage was switching his hide box substrate from T-Rex forest bed expandable substrate to regular Aspin bedding. I can't imagine the Aspin causing this since so many people seem to recomend it as an option. What are other possibilities? I've taken out his hide box completely just to rule it out and better monitor him. If it continues we will see a vet. I'm just looking for other opinions.

