Yes, actually I do hear them at night nibbling at the food I leave out and using the litter box. The stinky tuna sounds like a good idea; I'll try that. Otherwise, I will be patient and let them come out on their own accord.
I just adopted two cats - both female about 1 year old - two days ago. Since then, they have both been hiding under either my living room sofa or my bed. I want to be patient and realize that it takes time for cats to be comfortable in their new su...