The Trophyrock chunks last much longer and the deer licking on them get much more benefit of the 65 plus minerals with each visit. picture yourself with a spoon of sugar, tastes good by itself, tastes good on your cereal, plus you are getting the benefit, ( if there is a benefit to sugar ), now dump it on the ground, pour some water on it, ie rain , then get you a spoonful, not only does it taste