I've never done that, kept inproperly the urine that was collected will turn quickly and become ineffective in fact, likely could work opposite by spooking game. Urine and scents are a tricky business as they can be very effective but like I mentioned, used improperly and you could blow an opportunity of a lifetime. I've had scents work, but I've also seen scents I put out turn doe inside out when they whiffed. That concern alone keeps me away from scents, urines and I try to go about it as scentless as possible.