I have found (through advice of wonderful people on the FML) that if my ferrets poop in an unwanted place (given that they already have enough wanted places to go) I put vinegar where they went. It hasn't let me down yet. I've also put BenGay down on places I don't want them going, that worked about 75% of the time.its like, you put anything strong smelling down on the places you don't want them going and make the litter areas as inviting as you can! ALso, try putting a little of their poop or pee in the place you want them to go and make the unwanted places smell NOTHING like a place they'd want to go. But what I've found work best is putting Ferretone on the [well-cleaned] place you don't want them going. My ferrets would never poop anywhere near their favorite treat! Hope I helped, as these pieces of advice have helped me from the FML in the past! Jen in PA [Posted in FML issue 4006]