Help!!! Lost a baby chin in the house.

I have 4 cats who managed to not leave a mark on 2 of the 3 chinchillas that escaped last night so I am hopeful this morning. One of of them I cannot find though. I live in a basement apartment...the kitchen, living room, bar and massage room are all one room with no doors and bedroom has the cage. I have hay on the floor, but of course I'm worried he is scared, stuck or dehydrated. I've tried shaking the treat bag, putting chinchillas sounds, looking behind and under everything multiple...

Help!!! Lost a baby chin in the house.