my dirthole sets for cat are big, probably 6" across and i use two, with the trap between the holes forming a triangle, use a clod of dirt or golfball/baseball size rock as a jaw guard. i try to force the cat from one hole to the next. i use lure,bait, and urine. or i change it up with just bait and urine. the flagging is good, i like wadded up cassette tape with strings of it pulled out of the wad. my 2 pennies.