Hog, Poultry, Dog Kennels, Stables, Dairy Barns, Animal Shelters. To disinfect boots and shoes of those who enter. Bladder is made of tough poly mesh over a foam core and is not removable. The poly bottom is non-permeable. One piece design to avoid tripping. Made in the USA. Do not use chlorine bleach. Place on level ground and fill 1 1/2 gallons of any liquid disinfectant or sanitizer. Foam core will soak up liquid.