I usually put out a 50lb salt block then add some Lucky Buck to it as it melts down in to the ground....I put out 2 Trophy Rocks last month and with all the rain we got they completely disapeared.The good thing is the Deer are digging up the ground in both areas more then ever before.Another thing I do is to make an Arm & Hammer Super Washing Soda Lick where I dig up the ground in a circle about as round as a trash can lid,then break up the soil and add 1/2 a box of the Arm & Hammer to the top soil,then spread out around 15-20lbs of rock salt and the other 1/2 of the Arm & Hammer.The rain will work it into the ground and the Deer love it...I refresh it every 2-3 months.