How to Make a High-Sided Litter Box – DIY High-Sided Litter Box

There is an older post on this site, Litter Boxes for High Spraying Cats, and I recently reran it and re-posted it on our social media channels. One reader, Jessica, saw the post and shared her DIY high-sided litterbox in the comments of that post. I wrote her and asked if she would let me share a photo of her DIY creation here on Floppycats (on the Litter Boxes for High Spraying Cats post). Still, she sent more detailed photos and instructions, so I thought it warranted a post. Thank you, Jessica!


You had asked me for pictures of my high-sided litter box.

I use a Sterilite 66qt container for the box itself. Other supplies are: a magazine, a permanent marker, and a wood-burning tool (be very careful with this)

Litter Boxes for High Spraying Cats IMG_0334

I use the magazine as a template and trace it on the side of the box. You don’t have to use a magazine-you can draw whatever shape or size pattern you want to cut out. Just don’t make it too low otherwise, the cats will kick all the litter out.

High Sided Litter Boxes IMG_0335

I found that cutting out the side made the hole too hard, or the plastic would crack. So I went to Lowe’s and bought a wood-burning kit for about $15. Once it is hot (and it gets VERY hot, so be careful not to burn yourself or set it down on anything flammable), I use it to trace the outlines I drew. It melts the plastic. It takes a couple of minutes to complete this step. Go slow and carefully to get a straighter line.

how to make a high sided litter box IMG_0336


Once you have melted through all 3 sides, you can remove the piece you want to cut out. You may have a couple of sharp edges in the melted plastic. I just run the tool’s edge along them to smooth them out. When you’re done with the tool, unplug it and put it somewhere it can’t burn anything or anyone. I tend to put mine in my garage on the concrete floor to be safe.

litter box for high peeing cat IMG_0337

Below is a couple of pictures of Wyatt of @willa_and_wyatt checking out the finished product!

best litter box IMG_0338
Litter Boxes for High Spraying Cats IMG_0340

I hope this helps out others! I started doing this when a cat I had at one time had bad arthritis so that he could get in the box. It’s also great for kittens!


Storage Bin Litter Box With a Front Entrance

Toni followed the directions above, but instead of having the entrance on the side of the storage bin, she made it at the end. This allows you to repurpose a storage bin into a mess-free litter box for a high-spraying cat or one that throws litter like confetti.

DIY High-sided litter box IMG_3067 (1)

“Thanks for the easy-to-follow instructions. I have always wanted to make a box myself but never knew how to cut through the plastic. A wood burner – who knew? 🙂

In addition, I was able to reduce my boxes from 3 to 2 because of their larger size. I liked using the clear container because it creates less stress for cats – they don’t like to be “ambushed” by other cats in the house.  Plus, the sides are at least 3-4” higher than before. Perfect for my big kitty.

Anyway, glad I found your website. Very helpful info – even if I don’t have a floppy cat!”

How to Make a High-Sided Litter Box - DIY High-Sided Litter Box IMG_3093

Litter Box for Large Cat DIY

I cannot remember how it came about – but Floppycats’ reader Aims Windler, in a comment on a Facebook post, posted a photo of her DIY litter box.  So I replied to that comment on Facebook and asked if she could please email me to tell me in detail how they made their homemade litter box.

Two cats on a patio walking past a DIY litter box

Turns out it’s really simple to make but quite effective at giving your cat privacy and helping to keep odors sealed inside a box.

They started with a clear plastic storage box from eBay. There are various sizes of storage boxes available, so you should measure for your biggest cat and find the one that will comfortably fit them. Aims chose the 29.0589 gallons (110 liters) box for their biggest cat.

litter box from the top image

They then bought a regular cat door you’d install on your home, cut a hole in the side of the box, and added it. So despite the walls of the box being thin, you can attach the cat door as long as it has a tunnel joining the two sides. Aims chose the cat door on Amazon (similar to the one in the USA).

Litter box with a door handmade

Once the flap is installed, the litter box is ready to use. It’s a good-sized box that gives your cat plenty of space to feel comfortable. Still, because it’s an enclosed box, there’s some sense of privacy (even with a transparent box), and smells won’t be as strong.

Front of litter box with a flap

Of course, if your cat is not used to cat doors or cat flaps, there might be a small amount of training involved – like leaving the flap off the door until they are using the litterbox.

Litter Box with a lid for large cats

You could use any litter with this DIY litter box. I asked Aims what they used, and they said they used Catsan, a non-clumping litter of tiny stones that work like crystals. Clumping litter would work fine, though.

Lid of a litter box

What do you think of this simple DIY litter box build? 

Have you designed your own litter box too?  We’re always happy to share readers’ designs and help others to find a litter box that works for them and their cats.

Have you ever created your litterbox?

 | Website

Hi, I’m Jenny Dean, creator of Floppycats! Ever since my Aunt got the first Ragdoll cat in our family, I have loved the breed. Inspired by my childhood Ragdoll cat, Rags, I created Floppycats to connect, share and inspire other Ragdoll cat lovers around the world,

Similar Posts

11 Comments

  1. Thank you for the amazing tutorial! I was able to make my own for my girl, who is developing arthritis in her knees. I needed a larger box for her so that she had more room to turn around, but the “under the bed storage bin” that I was using was too short… My girl kept missing the box and peeing right over the edge as she has trouble squatting all the way now! I found this tutorial and decided to make my own… And it worked so well! I used a soldering iron to melt the sides of the box, and then I found great success with a lever bar scraper tool, but I’m sure even a sharp blade would work, and basically slowly chipping the globs on the outside off and smoothing out the edges. Then I just took some sand paper and rubbed it over for extra measure. Worked like a charm!

    https://ibb.co/hyfbgR6

  2. Thanks for the easy-to-follow instructions. I have always wanted to make a box but never knew how to cut through the plastic. A wood burner – who knew? 🙂

    In addition, I was able to reduce my boxes from 3 to 2, because of their larger size. I liked using the clear container because it creates less stress for cats – they don’t like to “ambushed” by other cats in the house. Plus, the sides are at least 3-4” higher than before. Perfect for my big kitty.

    Anyway, glad I found your website. Very helpful info – even if I don’t have a floppy cat!

  3. Diana L Sherrill says:

    Hey Jenny!
    Thanks for posting these litter boxes. I’m especially interested in the one with the cat door. We have just adopted a Sheltie puppy, 1st puppy in 32 yrs, and I have concerns he might end up a little too interested in the kitty litter deposits. This will be a wonderful tutorial to have if he is.
    Right now, he has made a nap buddy with our 12 yr old Ragdoll, Bear. Bear is already patient with him and will be an excellent big brother. Thanks again.

    1. I am glad it was helpful – hope you’ll share a photo when it’s complete =)

  4. I love the idea of using the wood-burning kit to cut the shape out and smooth the edges. Very clever Jessica!!!

    Love from Pam and FLUFFY
    xoxoxoxoxoxoxoxoxoxoxox

      1. Very cool Jenny!!! I may have to DIY a box for young Master FLUFFY because he LOVES scratching around in his litter box and he sends the litter FLYING everywhere…

        I’ve never discouraged him from doing this because I want him to be happy and content with his litter box…

        Love to you, Chiggy & Charlie
        from Pam & the FLUFFY xoxox

        1. ha ha ha – yes, it would help with the scratching around and litter flying everywhere! A good cat litter mat will help with that too! As you probably know, I love the Blackhole cat litter mats.

  5. SUPER PAWESOME & FABULOUS POST, Jenny & Jessica! TYSVM for sharing this great DIY info with all of us, Jessica! Brilliant!!! 🙂 <3

    Big hugs & lots of love & purrs!

    Patti & Miss Pink Sugarbelle 🙂 <3 <3 <3

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.