Whink 20223 RUSTGuard Time Released Bowl Cleaner, 4 oz
$15.99
- Use to prevent the buildup of rust and hard water stains in toilet bowls and reservoirs
- 2-in-1 formula contains no chlorine bleach, phosphates, dyes, caustics or acids
- Simply place one tablet inside of the toilet tank to prevent rust stains
- Safe for use in all septic systems, plumbing and colored toilet bowls
- Tablet dissolves into thick gel in tank and continues working for up to a month
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