I've used just about everything, trophy rocks, apple licks, deer cocain licks, cattle/cow blocks, goat licks and it's hard to beat the trophy rocks! Sure they cost more at around $15 a pop, but hey that's like buying a lousy 4 gallons of gas....and it will last alot longer!!LOL I bought a boat load of the 4lb apple favored mineral licks at walmart for $2 a piece(on sale) and some cocain licks for $3. I'll use the through the summer then go back to the trophy rock in august.