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Litter Boxes
  • XL Modkat Litter Box

    Modkat XL
    Front/Top-Entry Litter Box

  • Modkat Top-entry Litter Box

    Top-Entry Litter Box

  • Flip Lid Modkat Litter Box

    Front-Entry Litter Box

  • Tray
    Open Litter Box

  • Compare all

  • Accessories
  • Litter Keeper
    Two colors

  • Lounge + Play
    Scratchers & toys

  • Litter Mats
    Multiple styles, colors & sizes

  • Clean + Organize
    For a tidy litter area

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    Happy + healthy kitty

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    How it all started

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    Read FAQ's or contact us

  • Liners
  • Modkat
    Type A

  • Flip
    Type F

  • Modkat XL
    Type C (Top-Entry)

  • Modkat XL
    Type D (Front-Entry)

  • Tray
    Type G

  • All Liners

  • Cat Litter Additive (3-pack)

    To reduce odor and extend the life of your litter, add a package of Modkat Cat Litter Additive to 10lbs of cat litter and sufficiently combine. Add more as needed for multiple cats.
      • Activated charcoal
      • Neutralizes cat litter odor
      • Inhibits bacterial growth
      • Extends the life of your cat litter
      • Fragrance free
    • In-the-box

      3x 80g packs


      Add 1 package of Modkat Cat Litter Additive to 10 lbs or less of cat litter & mix well. Add an additional pack for use with multiple cats.


      Activated carbon treated with purified water, natural zeolite, green tea extract, persimmon extract, DL-malic acid.


      Keep out of direct sunlight, and store in a cool, dry place.


      Keep out of reach of children and pets. This product is NOT for ingesting. Seek immediate medical treatment if ingested in large amounts.

    Customer Reviews

    Based on 13 reviews
    P r.P.
    Cat litter additive

    It works pretty good.
    I have made my own litter box deodorant which is pretty good too.

    Arlena C.
    Cat litter additive

    So far it’s working great. I’ve only opened one, and it seems to be working just fine.

    Robin M.
    Handy item keeping your kittys cleaning supply nearby

    Nice setup with a sweeper and scooper.
    Takes little space and looks discreet..

    Angela M.
    Worked well

    This really helped my cats litter. I'm not sure if it's the Bengal breed or cuz she is a kitten but the ammonia smell was awful. Adding this took it down 50% will buy again.

    Andrea L.
    Works really well!

    We use pretty kitty litter and started adding this to it. It works even better now!