Making a mock scrape with the preorbital scent On overhead branch seem more effective. I tried the dripping systems quite a bit in early 90's and did not notice an increase in scrape usage.
I think finding a good travel area near doe bedding and feeding areas, saddles, edges of clear cuts , swamps and making mock scrapes with an overhead branch seems to work better. Wear knee high rubber boots, latex rubber gloves and watch your scent control when making scrapes. Oh and watch the wind direction too when making scrapes. Do not want to educate the bucks
