Many "dry ground" lion hunters here in the Southwest use cell phone cameras, get the pictures of a cat then load up the dogs and go catch them. Total BS and unethical in my opinion.
I have a few cameras out, but only check them once every 4 months or so. It is a long drive and 15 miles roundtrip on foot or mules to check them. It is neat to see what is on them, but they are not really too useful for hunting.