well i have to try that newspaper trick, and i dont mind you making a joke serendipity lol, i do find it weird that they were in there. The sand i use is chinchilla sand im not sure what caused them to go into the cage as well its glass and they would have to crawl, not to mention nothing is wet unless well the pee in the sand which makes me think that why they were there.
heres where the sand is its all the way in the back corner