The object
Aaron Krause invented Scrub Daddy, the smile-shaped cleaning sponge whose foam becomes firm in cold water and soft in warm water. Krause’s company records the material-development origin, while 2025 reporting identifies him as an active inventor and says the brand had exceeded $1 billion in sponge sales.
01
What Aaron did
invented the Scrub Daddy smile-shaped sponge, using a foam that changes from firm in cold water to soft in warm water
02
Why it matters
Scrub Daddy became one of Shark Tank’s most commercially successful consumer products, reaching more than $1 billion in sponge sales.
03
Living-status check
Philadelphia magazine interviewed Krause from his company office in April 2025 about continued manufacturing and expansion.