Mushroom Monotub Filter Patches (6 Pack)

  
These monotub filter patches measure 2.95 inches and have super duper strong adhesive on the entire patch. The adhesive is resistant to moisture and can also serve as a flying insect trap if you decide to adhere the patch only to the outside of the tub. These patches can be used on one or both sides of the monotub hole that you drill out. We recommend using a 2-1/4 inch hole saw. These patches may be reused if kept clean and dry during their use. These patches are not waterproof, but are water resistant. Proudly made in the usa. This item is made of corn and rye berries, millet, grain spawn, bird seed, brf, brown rice flour, vermiculite.