This cleaner is not reusable like some liquid glass cleaners. This is a one time use gel that works amazingly well when used in conjunction with water and something abrasive like an old tootbrush, hand/nail brush, cleaning brush, sponge or something similar. I used a cheap bottle brush. Apply small amounts of the gel to the dirty areas and lightly scrub the area. Let the scrubbed area sit for a couple of minutes then rinse with warm water and scrub with brush until clean. I was amazed at how clean the silicone was afterwards. For me, this a must have for cleaning silicone. It doesn't take a lot of the gel to be effective. I cleaned a 8" piece with about 4-5 pea sized amounts of gel. Scrubbing in conjunction with warm water helps.