Scroll down a bit and find the post that says, “Want to try free cleaning tools and earn gift cards in the process? If so, sign up to become a product tester today!”. Click the Sign Up button to fill out your contact info. Butler makes cleaning products for brands like Febreze, Dawn Mr. Clean, Gain, Black & Decker, and more.The Frugal Free Gal Facebook Group for the hottest alerts. Subscribe by email for daily updates!