Feel your pain but vicariously, as I am catless. On the other hand, my beloved and entirely fearless sister-in-law is up to her lace-up ranch boots in cats, one of which is an adopted feral kitten. Chloe is a stunner who looks like a miniature snow leopard, has the same hunting instincts, and considers everything in the ranch house to be fair game. Barb tried the water thing and the shooing thing and all manner of other things and finally hit upon...air. You know those little aerosol cans used to gently blow the dust out of your computer keyboard with a jet of air? Barb learned that she could gently Jet" Chloe away from her breakables/munchables with just such a device. And after the first few times, all she had to do was spritz air from across the room and Chloe would immediately back away from her target-of-choice. Cool, huh?
Best to you and your fur folk,