[joel the signman]

all of the above are true.I have used them my advice besides what been said is you have to be scent free when you set it up,rubber boots and gloves. i use the hanging dripper that wont freeze.when you make a scrape you should also make a licking branch and rub the tree.i will tie a brach if i have to .i try to tie the dripper high enough that a deer on its hind legs cant reach it.clean an area of 3' in diameter and remove the leaves(this way you 'll see the tracks) good luck

 

[joel the signman]

its a branch that hangs over most scrapes and some rubs a buck will rub its forehead on it and then lick it.go to the pics section theres a post about scrapes you'll see the licking branch

 

[joel the signman]

http://www.deerhuntersclub.com/forums/pictures/4365-pretty-cool-scrape-sequence.html