To make sure your synthetic urine does not expire or go bad, simply store it in a reasonable manner. Keep the lid on tight. ... But to be sure, if you leave it in a coat pocket, even until the next season, your synthetic deer urine scent will not go bad or expire. Simply use it just as you did the previous year.

How long is Doe Estrus good for?

The scent of a doe in heat does not last but a few hours.. nothing you buy in a bottle is going to remotely smell like a doe in heat...

Does bottled Doe Estrus go bad?

If it still smells just like the stuff thats fresh maybe use it with a little fresher stuff and make a mock scrap to use it up when the time is right. It does go bad. Well, not bad but it won't be as effective.