[beccaneko]

My two boys have a very nice grated litter box, yet they still choose to poo and wee everywhere else. I even have the famous pee rock!

 

[Sabatea]

Hmm... Some rats just don't take to litter training and refuse to do as their owners wish. XD They may just be that way... How often do you clean the cage?

 

[beccaneko]

a good clean once a week ( they have fleece lining) and i even put their messes in the box

 

[Sabatea]

Are there any other animals in the room that may make them nervous? A cat or a dog or another small animal? Otherwise you're probably just dealing with rebellious ratties. XD Sadly, you'll just have to keep doing what you're doing and hope they eventually catch on. If they're young, that may be it. Younger rats may take a bit to catch on and then suddenly it just clicks for them. :3