I've never used a light, but cardboard box with 250 w light...sounds like a fire hazard. Poop balls I use a butter bowl with abt 1/4" coconut or other liquid oil in it then stand keet in it- holding securely- for a few seconds then use soft cloth also dipped in oil to remove feces. To me, it comes off easily, and the oil leaves a film that reduces, not eliminate- future sticking, and protects their feet from infection (esp coconut oil). Mine living outside are adults and they still get a good oil cleaning when I trim their nails. And use the oil for their poopy bums.