Waterproof & Rust Resistant Our sponge holder is made of stainless steel, it is waterproof and rust-proof, strong adhesive, can be used even in wet environment, don't worry about falling. Strong Adhesion This sponge holder is very durable, after our repeated tests, its load-bearing capacity is 8 pounds, the adhesive is thickened, and it is not easy to fall off. (Be sure to clean and dry and wait 24 hours before using!) Sink Holder This kitchen sponge holder is versatile, very suitable for sinks, kitchens, bathrooms and other places, saving you more space. Step 1 '' Wipe the walls clean and keep them dry. Step 2 '' Peel off the adhesive on the back and stick it where you will use it. Step 3 '' Press firmly to make it firmer. Step 4 '' Wait 24 hours before using to ensure extra durability before hanging.