I clean my tubs every Saturday and by the looks of the filters the DIY air purifiers are picking up a lot of the dust. What type of purifier are you using? I'm thinking about building an enclosed room/box in my basement big enough to house 3 - 8 tub racks with fresh air being pushed in the bottom and 2 exhaust fans in the top running to the outside of my home. Other than cleaning snake tubs I never had to clean the snake room so much before which sucks because it dubs as my office.