This cat box design eliminates litter mess on the floor, by encouraging the cat to climb up a sisal ramp to exit. It keeps all of the litter contained and because the lid lifts up, it makes cleaning the area very easy.  Basically, it's just a deck box with a regular litter pan inside it, and a sisal ramp to get the cat's paws clean on the way out. 

As a cat owner, I'm surprised that they don't already mass-produce a product like this.  Everyone who owns cats knows about the problem of litter kicked out of regular cat boxes and tracked around on cat paws.  I put expensive litter mats in front of my regular covered cat boxes, but my cats just jump right over them.  By putting their pan inside of a larger box, with the exit up high, where litter can't get kicked out, and by providing the sisal ramp to clean the cat's paws, my floor stays spotless.

Magic Marker
Hot Cutting Tool (or hacksaw or other plastic cutting device)
Hand Saw
Electric Screw Driver
Square or Straightedge

1x  Regular Cat Litter Box
1x  Plastic Deck Box
1x  1" x 6" board (actual width will depend on the hole you cut) 
2x  Metal L-brackets
4x  1/2" screws
100ft  Natural Sisal Rope (1/4" thickness)
1x  bottle Carpenter's Wood Glue (fast drying 30min)
1x  roll of Plastic Tape

Step 1: Make a Hole.

Sketch out an opening big enough for your cats on the upper part of one of the end pieces.  Avoid the support braces, wherever possible.

Use a Hot Cutting Tool (or hacksaw or other plastic cutting device) to cut out the opening.  If you use a hot tool, do the cutting outdoors because there will be strong fumes.  If you cut using a saw, make sure to file or otherwise round the edges so the plastic is not sharp. 
<p>Thanks ! I made it this morning ! Great idea !</p>
<p>Thanks ! I made it this morning ! Great idea !</p>
<p>Thanks ! I made it this morning ! Great idea !</p>
Very nice, thanks for sharing
Nice work. I've been meaning to make something like this. This is just the kick start I needed. :)<br /> <br /> P.S. I have 2 black cats, also!. :D I love my Halloween babies. ^_^
My black baby, Kira, is 5 years old now. Had him since he was 10 wks old. And he's EVERYBODY's favorite cat. Not because of his color, but his temperament. And I've heard that many all black cats have the same temperament. He'll let you do anything to him. Hold him upside down, lift him up above your head, cradle him like a baby, hold him up to your shoulder (like burping a baby) and snuggle him (he LOVES to snuggle! with actually wrapping both my arms around him and gently squeezing. he lets me know if he's not done, too!), do little flips with him on the ground, lay him on his back on your lap and let him slide down the crack between your legs, etcetcetc... I know most of this because my 24 yr old son does these things with Kira and Kira just flops like butter and purrs up a storm. Obviously my son is very very careful and loves Kira very much. But Kira is very needy and dependent. So I take very special care of him and love on him a lot. He is the sweetest cat I have ever known and I've had like 13 cats over 16 years. Do anything you want with him and all he wants is love. =) <br> <br>Anyway, interesting fact... cats that are ALL black like my Kira (fur, nose, whiskers, paw pads, even claws) have a condition called melanism. It's the opposite of albinism. It isn't an illness and it doesn't hurt them at all. Many species have it. It's just a skin condition. It's actually what makes black panthers black. =)
I love mine too!&nbsp; I just adopted these two a couple of months ago.&nbsp; <br /> <br /> Did you know that black cats and kittens are the hardest to find homes for?&nbsp; Many people are superstitious.&nbsp; <br /> <br /> I'd like to say for the record that I've had several all-black cats over the years, and each and every one of them has been wonderful and sweet!&nbsp; No bad luck yet, even though they cross my path about a zillion times a day.&nbsp; :)&nbsp; <br />
i love my sleek black kitty, he is an all the time house cat but we keep an extra close eye on him around halloween not just about the people who use them as props, but more for the people who use them for sacrifices... not a nice thing. We got him from a horrible woman who wasnt taking any care of him or his brothers or sisters or even parents who were all black, the first day he seemed fine dispite the ill care but we found out when we took him for his check up the next day that he had hepititus and mites and fleas and an upper respiratory infection ... we went back that day to try to rescue the rest of them but they were already gone, i hope the other adopters got them to a vet in time... she said we could have lost our little guy if we hadnt brought him in. Now he is huge, sleek, sassy and rules the roost at seven months.
Yes, I did know that. And most places will NOT adopt them out before/around Halloween time because there are people who would/have actually only used them as &quot;props&quot; and then just dumped them. So sad. They are gorgeous creatures! <br /> <br />
wow.&nbsp; That's terrible.&nbsp; The more I find out about it, I'll probably never adopt a different colored kitty - only black ones so I know they'll be safe.&nbsp; <br />
I'm hooked as well. ^_^
Nice concept but I can't see a cat squeezing into the box with that ramp flush with the bottom of the opening. The ramp should be dropped down to give them clearance to climb in and out.
I know this is an old post ... but I'm new on the site and searching for ideas on containing the litter, the dust from the litter, and of course, odor. And, my girls really don't like lids/covers on their boxes, no matter how tall or large.<br><br>But I like this idea ... I can leave the lid off the litter box itself, and there will be lots of head room for them. But instead of a deck box (which can be kind of $$$), I may try with an XXXL plastic storage tub/bin. Not quite as nice looking as the deck box, but still practical. <br><br>I discovered the hard way not to simply use an XXXL plastic bin as litter box (to keep more litter in the box, instead of it getting thrown about the room) --- it's impossible to pick-up to take outside to dump!<br><br>Thanks so much. Now if I add one of the fan set-ups, I should be really set. One of my girls has Inflammatory Bowel Disease, and there is no odor like the diarrhea from that. So I have 4 boxes for 2 cats, 2 of which are on a screened patio, and some days I still can't keep up with the sick one.
I bought several big containers at big lots and it's awesome way to hold cat litter. also, now i'm using 21 cent aluminum trays, i prefill a whole bunch...and use wood pellets (for stoves or horse bedding) for cat litter....it's not dusty, and it slides right out ....recommended by the animal shelter dot org magazine and i've seen it used at pet shelters. 4 dollars for a 40 lb bag, i stocked up!!
I bought several big containers at big lots and it's awesome way to hold cat litter. also, now i'm using 21 cent aluminum trays, i prefill a whole bunch...and use wood pellets (for stoves or horse bedding) for cat litter....it's not dusty, and it slides right out ....recommened by the animal shelter dot org magazine and i've seen it used at pet shelters. 4 dollars for a 40 lb bag, i stocked up!!
I have been looking for a reasonably priced litter box enclosure to keep the dogs out, but all the commercially available ones that look like they would suit my needs are usually at least $200. I'm so glad I found your instructable! I'm not sure how I missed it before (i've searched for litter pan soultions on here a few times over the past couple months), but I think I know what I need to do to make one now. Great idea!
I just made a version of this over the past weekend! So far so good. Instead of sisal, I cut a piece off of the large 3M litter mat that I already had and glued it to the ramp. The rest of the mat went under the litter box. Right now I am using my regular (non-high-sided) litter box inside, and so far there has been ZERO litter on the floor! If there's some tracking later, I might switch to a higher-sided box. Also, I haven't bothered to seal it w/ tape yet, I probably will soon. <br /> <br /> Oh - I didn't put my cats inside to introduce them to it, because they are skittish and I was worried they'd be scared of the new box if I shut them in it. They figured it out on their own. And it's by a window, so it doubles as a bird-watching seat. :)<br /> <br /> Thanks for the awesome idea! (Photos to follow if I can find my camera cord)<br />
Oh, and this would be delightfully dog-proof.&nbsp; Our dog has earned the nickname PooNommer, and we need a solution!<br />
After a few weeks in use, the box is working perfectly. &nbsp; <br /> <br /> I dustbust the loose litter every day, and so far the kitties haven't had any accidents outside of their litterbox.&nbsp; This was something I was slightly concerned about, so I'm glad to report that it's a non-issue.&nbsp; <br />
Great way to also keep the dogs out of the litter box !!!!!!!
Wonderful idea!&nbsp; Does it help contain the smell too?<br />
As a matter of fact, it does.&nbsp; :)&nbsp;&nbsp; <br />
Perfect!<br />
Now that, is a good idea. Will have to implement.<br />

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Bio: I am a former zookeeper. One thing you may not know, zookeepers often have to make their own specialized tools, enclosures and supplies. It's ... More »
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