The only scents I have had genuine luck with were ones from deer farmers that were freshly obtained and kept in controlled temp in a fridge. Every one I have seen from a bottle in a store smells like ammonia. I never smelled ammonia in the deer woods.

The ammonia smell in the store bought stuff comes from bacteria forming during decay of the scent, which may contain deer urine, but is not necessarily 100% urine. Deer urine in the woods doesn't start smelling like ammonia because it absorbs into the soil and breaks down naturally. So ammonia is not something that deer could be used to smelling in the deer woods so IMO it would act more as a repellent than an attractant.

Real, fresh deer urine doesn't have much of a smell at all.

If you want some serious buck lure there are 2 ways to get the best available and you can only get them right from the source.

1. Shoot a doe that is in heat, carefully gut, collect her urine and either use it that day or keep cool for use in the next week.

2. Shoot a buck during rut and again carefully collect his fresh urine AND one of his tarsal glands. You can drizzle the urine over the gland in another hunting area and other bucks will sense unwelcome competition. Again, it has to be kept cool and used pretty quickly.