Give the cat plenty of space IGod White Jesus Christ Classic Shirt and if it’s hiding and you know where it is, let it be. Just hang around and make yourself present (make some soft noise, but not too sharp or too loud, just enough to let the cat know you’re there). If the cat knows you aren’t trying to harm it, it will be far more likely to open up. And if you follow the cat to its hiding spot, they will be pretty tense. We had our little feral stay in our guest room and I’d lay on the bed and read or something, just getting him used to our non-threatening presence. It worked better than anything else we tried. I’d do it for an hour at first and then increased it until I was sleeping in there. The first couple nights he would only eat or use the litter box when it was dark but after a few days he started sleeping on the bed with me. Now he is the snuggliest moster and isn’t even bothered by our young kids. Eventually, as they grew used to hearing our voices they moved out of the living room and would use their cat stealth to quietly go to any room that was occupied by me or other family members (kitchen, bedroom, den etc..) and as long as they had something to hide under like a table, sofa, or chair, they would spend hours being present but hidden in the same room as us. After a while they stooped hiding and would just chill in full view from a distance. You may have been joking but just in case, don’t wash the cat. Cats are well equipt to wash themselves and should only be washed by humans if they have got into something very dirty or toxic for them to clean.