From Homestar Runner Wiki
Grout Clean'r is one of the many products available for purchase at Price Style, already at a "low, low price" before the added bonus of double coupon day. Blue Laser Commander bought it because the Blue Laser Supercomputer told him the reason he couldn't defeat the Cheat Commandos was mildew. A Blue Laser Minion used it to scrub the tile wall in the bathroom.
- Debut: Shopping for Danger