2. Scrub Daddy
Revenue Earned: At least $75 million
Considered by the show as, the most successful Shark Tank product ever, Scrub Daddy started out as a scrub that was intended for the car wash and shops. However, the creators later learned that it could be used as a home scrubbing tool which led them to try their hand at Shark Tank. The company has since gotten one of the highest revenues in the show for a product, and a scrub family was later created.