When Killearn Kitties let me have 2 of her feral kitties (RB Jock and Bonnie) they hid behind the sofa for weeks and would only come out at night. It took months of constant playing and treats before we finally gained their trust. Then my RB Jock became the biggest sook you can ever imagine, time and patience thats all whoever takes them in needs !! You don't even need experience as I had never been owned by cats before and even though I say so myself we did a grand job !!!