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Level Gauge Cleaner

Formulated to restore RV and Marine holding tank level sensor operation

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Home Support Level Gauge Cleaner

Thetford® Level Gauge Cleaner

  • Superior probe and tank cleaner
  • Restores holding tank level sensor operation
  • Removes toilet paper sludge and soap scum buildup
  • Use it regularly to prevent sensor reading issues
  • Works in both grey and black water holding tanks
  • 100% biodegradable formula

Frequently Asked Questions

Cleaning and maintenance

To clean gauges, choose a warm day, above 75F, pour 1/2 of bottle of LGC into 40 gallon black holding tank through toilet opening. Pour 1/2 of bottle of LGC into 40 gallon grey holding tank through sink or shower drain. Flush the drain with running water and fill the tank. Mix by driving around and let it sit 24 hours. Drive vehicle again to loosen deposits. Empty and rinse holding tank. Product’s effectiveness doubles between 75 and 85 F. DO NOT use in freshwater tank.