Hyvest Ultra Guard Toilet Cleaner Disinfectant (Powerfully cleans and disinfects) Hivest Ultra Guard Disinfectant is an advanced thickening formula that powerfully cleans and disinfects toilet bowls. Effectively dissolves the toughest stains, limescale build-up and residue. Leaving behind a clean bathroom sparkling with a refreshing scent. With regular use, UltraGuard prevents the accumulation of stains in the toilet bowl and keeps it clean while effectively removing germs.