Has anyone had any luck with keeping doe-in-heat urine and using it successfully the next year? I bought a big 2 oz. bottle of it and got my buck the second time I used it. Well over 3/4 of the bottle left. It' s in a brown glass bottle, which should help keep it fresh, but I' m not sure about for a whole year. How about freezing it? Would that work, or does that break it down in some way?