I've used Active Scrape in the past and it got some sporadic responses however when I switched a few years ago to James Valley Scents Gels and liquids I've been amazed at just how effective Mock Scrapes can be! I've since become a believer that there really is a difference in scents out there. At least contact JVS and ask for his detailed catalog. Even if you don't use their products it actually contains some of the best info on scents and their useage that I've found. Check it out?