Bath house

I am looking for a more contained bath than the fully open top one we have. When Chico & Chino roll in, they splash sand all over (especially with the tail). I saw this picture on Pintrest featuring an Ikea jar, like in this picture: https://i.pinimg.com/736x/e0/4d/00/e...4b446dce98.jpg
Does anyone here have experience with this jar? I am concerned it will be too small for fully grown chinchillas, especially when the two of them will certainly try taking a bath together. What's your opinion about this jar?
Thanks!