I use scent killer products, but I still use earth scented wafers to cover any scent that is left over. I tried not using the wafers...then went back to them, after getting sniffed out a couple times. I think the key is not to refresh the wafers in the container, the stronger scents turn the deer off. If you smell the wafer and it reeks just think when a deer smells it, they can smell 10 to 15 thousand times better than humans are capable of smelling.
"Let a young buck go, so he can grow."