When there is a good sale, it is easy to overbuy. Sometimes you can get things for free or close to free. How do you keep your purchases under control so you aren't getting so much toothpaste that you build a room just to house all of it like one guy did on Extreme Couponing?
1. If you don't use it, don't get it. Even though it may be free, don't get it if you aren't going to use it.
2. When you open a new tube of toothpaste, write down the date you opened it. When it is done, record the date you are finished with it. Calculate how long it will last and then only buy what you need before it expires. You can do this with other household items and with food items, too. It will keep you from overbuying and give you an idea of just how much is consumed.