The biggest reason why there are so many using other methods is easy it is not legal in most of the developed world. Canada, it can not legally be brought in and the EU is the same. I don't know about the asia and australia but that is good reason not to use it. I thought it was being restricted in NY and Florida as well.
The use of it according to the information I was given has such extreme measures that I would not use it as it is too difficult to use safely.
"Vacate rooms after treatment and ventilate before reoccupying. Avoid contamination of feed and foodstuffs. Do not allow children or pets to contact treated arcas until surfaces are dry."
"Remove and wash contaminated clothing before reuse."
"Harmful if absorbed through skin."
"Avoid comact with skin, eyes or clothing."
"If on skin or clothing: .Take off contaminated clothing.•Rlnse skin immediately with plenty of water for 15-20 minutes.•Call a poison control center or doctor for treatment advice." -From the instructions.
from the EPA document (73617-1) http://www.epa.gov/pesticides/chem_s...1-20040505.pdf
My snake room is carefully controlled, popping open the window when it could be as cold as -25ºF out is simply not going to happen. What do you wear? Tyvek suit, I suppose and toss it after you are done. I use the old school methods DE and some elbow grease the 5 times we have had rescues with mites the old methods worked just fine. Why subject your self to potentially carcinogenic chem and crazy precautions?
Personally I mix 1000s of gallons of toxic chemicals a year. I follow every precaution exactly that they state. I cannot see how an everyday person could follow the directions on the label of PAM. So the assumption is that they do not use the product in a safe manner.