Another possibility might be to thump on the floor as you're beginning to enter their space - I think I read this by another member but I apologize I don't remember who....ah, found it; Advice For A Deaf Foster Cat
Good idea! As often as she wakes me from sound sleep I forgive her. oh...what we do for our kitties! In most of the world black cats are good luck I read. I guess I'm lucky with deafness the only issue ever in her 19yrs. She used to have blood in her scat off and on for years-vets found no reason for this and now its gone. I think it was oat fiber in gosh was it Taste of the Wild dry which I ditched for American Journey and Wysongs geriatrix. 2/3 of her food is wet now. AminAvast supplement in only 10 days has increased her appetite and I hope helping old kidneys.