|Nibblet on my purse.|
So that leads me to the question - can rats be potty trained? Rats are very intelligent and are able to learn many tricks, just like dogs. They are highly trainable pets. So the answer to this question is yes - rats can be potty trained.
Rats will usually defecate in one area of their cage, even if they have no litter box. Getting a rat litter box will help you to keep their cage cleaner, however. I like the type of rat litter boxes that fit into the corner of a cage. You can use paper litter pellets as rat litter.
To potty train your rat, just add some feces pellets to their litter box and put them in there. Anytime you notice them go outside of the box just place those feces in the litter box and put them in there with it. When you notice that your rat does their business in the box, reward them with praise or treats.
Potty training a rat is pretty simple. It still may be hard to get them to urinate in their litter box all the time. Many rats will still urinate where ever they please. If you're persistent, it is possible to train them to urinate in the box exclusively too.
I've even heard that some people's pet rats would go in their cat's litter box when they were outside of the cage. Or even better - the toilet! I wonder if there are any out there who know how to flush once their done?