Package of Whink RUSTGuard.
Package of Whink RUSTGuard.
Click to Enlarge


Select a Color

Expand All Collapse All
  • Available Colors RUSTGuard:
  • :

  • :

About RUSTGuard

Stops Rust With Every Flush.

This unique formula prevents the formation of rust and hard water build-up in your toilet bowl and reservoir!

RUSTGuard® contains no acids, caustics, chlorine bleach, phosphates or dyes and won't attack plumbing like chlorine bleach cleaners can!

Safe on all plumbing and septic systems.
Won't harm pets.

Available Sizes

  • 4 oz.
  • 12 oz.

Ingredient Cas # Function
Sodium Dithionite 7775-14-6 Reducing Agent
Polyethylene Glycol Stearyl Ether 9005-00-9 Surfactant
Borax Pentahydrate 1330-43-4 Cleaning Agent
Glyceryl fatty acid ester Withheld Emulsifier
Polyethoxylated glycol fatty acid ester Withheld Surfactant
Polymeric pentasaccharide Withheld Thickener
Sodium Carbonate 497-19-8 Cleaning Agent
Sodium Metabisulfite 7681-57-4 Reducing Agent
Sodium Sulfite 7757-83-7 Reducing Agent

Technical Documents

Safety Data Sheets (SDS)
note: To view the SDS or TDS you need to have the Acrobat Reader Software.