Litter-Robot 3 Refresher Kit

Save money by ordering Litter-Robot 3 refresher items in one convenient kit, which includes premium cat litter, waste drawer liners, and carbon filters.

This essential kit is just the refresher you need for your Litter-Robot 3! Get one bag of all-natural, clay-clumping kitty litter that’s ideal for Litter-Robot 3, custom-fit waste drawer liners, and odor-absorbing carbon filters. Each kit includes:

  • (1) 20-pound bag of premium cat litter
  • (25) waste drawer liners
  • (3) carbon filters (not compatible with Litter-Robot 4)
  • (1) 20-pound bag of premium cat litter
  • (25) waste drawer liners
  • (3) carbon filters


  • How often do I need to add litter to the Litter-Robot?

    The Litter-Robot uses litter very efficiently since the patented sifting system only removes the clumps. We recommend checking the litter level against the raised fill line (on the black rubber liner of the globe) each time you empty the waste drawer, which is about once per week for a single cat or twice for multiple cats. Be careful not to overfill the globe.
  • How often do I need to replace the Litter-Robot waste drawer liner?

    Replace the waste drawer liner whenever you need to empty the waste drawer. How often you empty the waste drawer depends on the number and size of your cats. For two average-sized cats, twice per week is typical. For a single cat, once per week is usually sufficient.
  • How often should I replace the Litter-Robot carbon filter?

    For optimal odor absorption, we recommend changing the carbon filter every three months, but replacement frequency is up to you and your cats' usage patterns. If you use scented litter, we recommend changing the filter more often as it will also absorb the litter scent.

Reviews displayed on this website may include reviews placed on other Whisker sites, including and We pride ourselves on transparency and non-profanity. All reviews submitted to and are unedited.

Ask a question.
Submit a Question