Would you let your guests crap in a box on your floor? No? Then why would you let your cats? Here’s how to get them using the toilet like civilized members of the family.
Aside from the risks of toxoplasmosis and other diseases transmitted by cat feces, there’s significant labor for the owner involved in maintaining a litter box. Being inherently lazy, I decided it would be easier to just toilet-train the cat. There are commercial solutions available (CitiKitty is a good one), but I found it’s easy to make an equivalent device from a few items at the dollar store.
One big advantage to doing it yourself is that you can cater the process to your cat’s learning curve, which can vary widely from animal to animal.
Functional Overview
The system is a toilet lid with a flat-bottomed bowl attached to its underside. It starts out just like a regular cat box, except nestled in your toilet. Over time you can cut away more and more of the bowl (where your cat will be standing), thus forcing the cat to adapt to standing on the lid and squatting over the hole that contained the bowl. During the training process a dustpan or another bowl can be used to catch the litter when you need to use the toilet.
In designing this system I tried to make it as easy for the cat to use it as possible. One issue many cats have is that squatting on the toilet seat (not the lid) is a slippery, sloped, and narrow proposition. If your cat is at all standoffish about this (mine sure was), then this system ought to work better. As an added advantage, this system allows you to put the lid down so you don’t sit on whatever your cat has tracked in on their paws. The components should cost you roughly $10.
Note: Don’t toilet-train if you live near a body of water where river or sea otters live. Cat feces can contain a protozoan called Toxoplasma gondii that is known to kill otters.
Steps
Step #1: Construct your seat cover litter box.
Next


- This project is easy; overall it took me about an hour to set up.
- Cut off one edge of the bowl in a straight line across the point where the lip meets the flat bottom. Use a Dremel to smooth the sharp edges.
Conclusion
Tips
- Confident, approval-seeking cats typically take more readily to toilet training than skittish cats.
- Wait until the cat is comfortable with each stage before advancing. If you rush it, the cat will get uncomfortable and may reject the entire process permanently.
- Don’t try to force the cat to do anything it doesn’t want to do — you shouldn’t have to pick it up and put it in the litter box, for example. If the cat’s not figuring it out, use a treat to tempt it into modeling the correct behavior, and if it resists (or behaves for the treat but not on its own) you’ve moved too quickly from one stage to the next. Go back a step or two and proceed more slowly.
- Indoor/outdoor cats are likely to hold it while inside and wait until they can go out, which can lead to urinary tract infections. If they don’t take to the training right away, give it up. (See warnings below.)
- It helps if you’re around to be available for training. If you’re at the office 12 hours a day, your cat will make its own solution for relieving itself.
- Flushing after the cat uses the toilet can help.
- Once the cat is successfully using the system, reward it with treats after each success to reinforce the behavior. This is particularly handy from stage 4 on.
A Word of Warning
There are a few big issues to keep in mind when deciding whether to try to toilet-train your cat:
» Don’t teach your cat to flush. Once it learns, it will find this an entertaining way to pass the time and your water bill will skyrocket.
» Don’t toilet-train if you live near a body of water where river or sea otters live. Cat feces can contain a protozoan called Toxoplasma gondii that is known to kill otters.
» This is the big one: If your cat isn’t taking to the toilet within a month’s time, quit trying (at least for a few months). Domestic cats are very prone to urinary tract infections, which can kill them if left untreated. Most often these occur when a cat is holding its urine, which it’s likely to do if stressed or uncomfortable with its toilet situation. Your cat may simply not be a good candidate for using the toilet, in which case it’s better to let the cat have its way.
Signs of urinary tract infection include (but are not limited to):
- urinating in inappropriate places
- crying in the litter box
- frequent urination in tiny amounts
- straining to urinate
- bloody urine
- excessive genital licking
If you observe any of these signs, see your vet immediately.
''This project first appeared in MAKE Volume 20, page 144.


















Hi Ottergirl,
Thanks for voicing your concern! I went ahead and moved the note up to the end of the intro.
do you think the methods here for cat using toilet works?
http://www.squidoo.com/cat-toilet-training
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