Ive never had a feral which didnt use a cat box so I dont buy into the idea to use dirt in a box for cats. Cat Attract is an excellent product and Ive had great sucess with it esp with kitten who don't want to stop playing and will crouch right where they are to do their business.
Hats off to you for caring for feral cats. There is a great post on socializing feral cats from Heidi in the Feral Cat section on CF where all the TNR people hang out! Cat Forum : Cat Discussion Forums - View Single Post - Kitty Cat Boot Camp