Place one of the scrubbers on the outside wall of the container and then place the second scrubber inside the container. They should immediately pull towards each other and hold themselves firmly against the side of the container. You can then move the outside scrubber and the inside scrubber will follow.



If the inside scrubber comes loose, just move the outside scrubber close to it and the inside scrubber should be pulled back to it.



The only problem with this design is that the magnet can sometimes slide out of the side of the sponge. This can happen if you pull the scrubber in the direction of the cut slot. You can avoid this problem in two ways. You can move the scrubber only in the direction opposite of the slot or you can just sew the opening closed.