Easy to use: throw the balls into the canister, add water and shake well - the smooth surface achieves thorough cleaning results without leaving scratches. Environmentally friendly: the cleaning balls are durable, rust-proof and safe for contact with drinking water. The cleaning beads for glass bottles and canisters can be reused as often as you like. Versatile: with the cleaning beads, in addition to the BOXIO canister, glass bottles, glass carafes, vases, drinking bottles, sodastream bottles and much more can be cleaned. Discover the ultimate solution for a clean canister with the stainless steel cleaning balls! Easy to use: throw the cleaning balls into the canister, add water and shake well - the balls will do the work for you!