Top Secret Scent Defense Laundry Detergent 32 oz.. The silver copper synergy technology proprietary to Scent Defense makes Top Secret Hunting Scent Defense a powerful 3-in-1 technology which makes it a potent bug and insect repellent as well as an attractant for deer. For more great Top Secret Hunting Accessories please visit our Top Secret Hunting Scent Defense page. Even if you choose to use some of the Top Secret Hunting Stash Eliminators or Scent Maskers listed below please do not use the Leaping Dew Scent Defense or Leaping Deer Scent Masking products on a leash as they will not allow the bottle to fully absorb. Package Contents: Top Secret Scent Defense A 3 in 1 technology laundry detergent that kills human odor while repelling insects fleas ticks mosquitoes and bed bugs. Deer also love the scent. DEET free.