Use the 8oz bottles. Take several of your 1oz bottles, soak them in ammonia to get then clean. Then just fill one as you need it, don't even need to fill it up. Keep the 8oz in the freezer. When you empty it, put it back in the ammonia to clean. just leave all the emptys in the ammonia until needed. When not in use, I keep all my CA in the freezer and have had no problems with keeping it for several years.