I bought some of the concentrate last year and it worked really well. I pored out three piles of corn next to my stand and put c'mere deer on two of the three. Even when the acorns were on the ground, the deer were still eating the c'mere deer on a regular basis, but not touching the other pile of corn.This year I bought a new bottle of the concentrate and havn't had any luck at all with it. This new bottle has a strong sweet smell to it and the bottle last year was almost odorless. I'm wandering if they might have changed something because my friend has a bottle from last year and he can;t keep enough corn put out.