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Litter Boxes
  • Modkat Flip white
  • Modkat Flip
    Front-Entry Litter Box

  • Modkat XL - Front/Top-Entry Litter Box
  • Modkat XL
    Front/Top-Entry Litter Box

  • Modkat - Top-Entry Litter Box
  • Modkat
    Top-Entry Litter Box

  • Modkat Tray - Open Litter Box
  • Modkat Tray
    Open Litter Box

  • Bundles
  • Modkat Flip Bundle menu
  • Modkat Flip Starter Kit
    Front-entry bundle

  • Modkat XL Starter Kit
Front/top-entry bundle
  • Modkat XL Starter Kit
    Front/top-entry bundle

  • Modkat Starter Kit
Top-entry bundle
  • Modkat Starter Kit
    Top-entry bundle

  • White Modkat Tray litter box bundle with reusable liners, gray litter mat and cat.
  • Modkat Tray Starter Kit
    Open tray bundle

  • Modkat bundles image
  • Essentials
  • Litter Keeper - Two colors
  • Litter Keeper
    Two colors

  • Litter Mats - Multiple styles, colors & sizes
  • Litter Mats
    Multiple styles, colors & sizes

  • Tidy-Up Kit - Scoop holder & dustpan
  • Tidy-Up Kit
    Scoop holder & dustpan

  • Lounge + Play - Scratchers & toys
  • Lounge + Play
    Scratchers & toys

  • Refills
  • Modkat custom liners - choose the correct liner type
  • Liners
    Custom-fit refills

  • Modkat Cat Litter additive box and 3 packs
  • Cat Litter Additive
    Keeps litter fresher longer

  • Odor Filters - Keeps things fresh
  • Odor Filters
    Natural odor control

  • Stain + Odor Remover - Eliminates smells fast
  • Stain + Odor Remover
    Eliminates pet odors

  • Modkat Refills used to keep things fresh.
  • Odor Filters + Holders

    Options
    • Choose the correct holder (With clip or no clip)
    • 100% Natural Bamboo Charcoal
    • Traps and eliminates odors
    • Fragrance-free, non-toxic and eco-friendly
    • It helps prevent mold, mildew, and bacteria
    • Recharges in the sun and is biodegradable
    • Purchase Odor Filter Refills » 

    Odor filters effectively eliminate litter box smells, with customers saying "No odor whatsoever!" and "these filters actually work!" Easy to install and rechargeable in sunlight. However, some customers report holders falling into litter boxes and detaching easily. A few noted minimal odor reduction. Works best when properly secured.

    • 5 stars: 59 (75%)
    • 4 stars: 9 (11%)
    • 3 stars: 6 (8%)
    • 2 stars: 1 (1%)
    • 1 star: 4 (5%)
    L
    Lee H. (Bowie, US)
    An original that’s the best!

    We purchased a ModKat Flip Litter Box years ago when the MK company was just getting started. I saw it online and knew it was exactly what we were looking for and it still is…great design, well-made, easy to clean/maintain. A very good product! We’re still using the original and it’s great. We’ve also purchased liners; and odor filters and the hook for them and these filters actually work! A good company.

    M
    Marco A. (San Antonio, US)
    Great product - works well!

    These filters are a great product and work just as advertised!

    A
    Ana P. (Ladera Ranch, US)
    Cool Cat product

    Awesome ! Quality and modern , fits perfectly and my cat loves it !

    C
    Christopher D. (Posen, US)
    Very simple to use

    Enjoying the product so far! Has kept the odors out.

    I
    Iris L. (Long Beach, US)
    Litter box filter

    I live in a studio apartment and you walk in and would never guess I have a cat!
    I’m very happy with the filter and my cat litter box! Remy and I enjoy clean and fresh air on a daily basis!

    V
    Virginia L. (Centreville, US)
    Get this!

    Well constructed. Excellent customer service. My kitty loves it!!! I don’t smell a thing!

    D
    Diana D. (San Francisco, US)
    Had to cat-proof it 1st...

    I installed it per the illustrations and wouldn't you know...my cat constantly removed it. I was so frustrated by her cleverness that I had to up my game. Used a binder ring to lock it in and voila...she can't do move it at all! She's still trying to figure it out...

    R
    Robin C. (Salt Lake City, US)
    Odor control

    I like the new charcoal packs as they aren't so messy. They do not stay in place very well is sthe only trouble.

    T
    Terri N. (Santa Ana, US)
    Modkat odor filters and holders

    Sometimes there is nothing that can get rid of certain smells. But once the offending “gift” is removed from the box the smell is gone.

    L
    Lawrence R. (Brooklyn, US)
    Perfect replacement

    Needed new clips and a way to reduce the oder

    M
    Mike M. (Fort Worth, US)
    Good Service

    Product was just what I ordered. Good service!

    V
    Victoria R.
    Excellent product!

    We love the top entry litter box and really appreciate the effectiveness of the filters. No odor whatsoever!

    J
    Jack P. (Fort Collins, US)
    I had one of those fancy robot litter boxes and [REDACTED]

    Look, I'm not getting into specifics here. I had, um, problems with it that I didn't have with the Modkat, so I bought a second one. They're great and worth the money.

    G
    Gary V. (New York, US)

    Odor Filters + Holders

    T
    Tricia N. (Van Nuys, US)
    Awesome

    I dint even smell the odor from the litter box or keeper with these filters. Easy to install too.

    L
    Linda D. (New York, US)
    Modkat litter box odor filter

    My box is used by two cats, and the smell is barely noticeable. I use use an odor powder too, but I those filters really make a difference.

    J
    Jeremy S. (Olathe, US)
    Best we found in 10 years

    We been through many liter boxes and liners. Had our cat since it was a kitten. Got to say found this brand on Amazon was reading the reviews, bought the whole setup. Liter box and all. We are definitely pleased and won't be changing back. No more blaming it weekly cause it smells soooo bad. This is such an easy, no mess and no smell choice. Thankful cause I love my my cat but not the litter box.

    D
    Deborah T.M. (Little Elm, US)

    Litter Box Odor Filter Kit

    J
    Joy C. (Annapolis, US)
    Filter kit works!

    We love Modkat! We have two litter boxes and buy all the supplies from Modkat. Love their products!

    K
    Kellie P. (North Liberty, US)
    Can't Rate a Product You Don't Receive

    Have yet to receive this package and Modkat support is non-existent.

    Hi Kellie, our apologies your package has not yet arrived! The tracking shows there was a delay in transit, however your order is scheduled for delivery this afternoon. We have followed up via email, please email us at support@modkat.com if any further assistance is needed. Thanks for your patience, we hope you and kitty enjoy!

    C
    Cheryl

    Haven’t noticed a difference in odor control.

    Hi Cheryl, for optimal performance please be sure to place filter under direct sunlight (2-3 hours per side) monthly. The filters can be recharged up to 3 times before they need to be replaced. With proper care, the two Modkat Bamboo Charcoal Filter packs can last up to a year. When the filter is finished, the granules can be recycled into plant soil.

    R
    Reagan H. (Placentia, US)

    Litter Box Odor Filter Kit

    C
    Cindy L.C. (Manahawkin, US)
    A scoop Above

    Great litter box that is easier to clean by lifting out liner and dumping. Just clean the liner and put back. Makes keeping the litter cleaner and life easier.

    L
    Lisa M. (Clayton, US)
    Clips and deodorant

    Works great. Really keep odor diwn

    C
    Cindy

    These filters make a huge difference!

    T
    Terrie

    Love the Modcat products

    J
    Jeannie C. (Atlanta, US)
    Litter Box Filter Kit

    I love Modkat litter boxes but the litter box filter is a real disappointment. It needs a mechanism to allow for better attachment to the litter box. After picking it out of the litter numerous times during the first day, I have to classify this one as a lost cause.

    Hi JC, we're sorry to hear this and are emailing you directly to help!

    H
    Hazzel

    Works well

    J
    Jonathan

    First one broke, but worked well!