Do not flush scrubber. Load: Open top of bag and drop it inside caddy. Snap! Insert tip of handle into opening on the top scrubber head until your hear it snap into place. Scrub: Briefly dip scrubber head tip into water. Clean above water line first. Scrub bowl, including under the rim. Toss: Slide button forward to eject used head into trash can. For Deep Clean Results: Empty toilet bowl before cleaning (pour in one gallon of water or use plunger). Clean as directed above. Let sit for 15 minutes to help dissolve stains. Flush to rinse. Some delicate surfaces may scratch. Test first in an inconspicuous area with pressure you desire to use. Not guaranteed to remove all stains.