Reader Elena sent us a terrific tip on our contact page that I wanted to share with you:
I sometimes impose on myself a “Use it Up” challenge where I find a stockpile of something (e.g. body wash) and do not allow myself to buy more of that type of item until I use it up. That way, I don’t end up with a huge supply of stuff I don’t need.
Elena’s advice is a great way to get started on the one-in-one-out rule. I find this especially helpful with bathroom items, like she mentioned. Shampoo, body wash, perfume, and lotion have a way of multiplying with very little effort.
Although it usually isn’t the best bargain, I’ve found that buying smaller bottles of these items works best for me. Yes, a gallon jug of shampoo may be the most cost effective option, but after six months of using the exact same shampoo I get bored, buy alternatives, and then have three bottles of shampoo in my shower. If I buy smaller bottles instead, I will use up all of the product before I tire of it. And, with items like lotion, I need an extra strength one in the winter and a light one in the summer. Instead of storing two bottles, I buy the smaller size and use it up during its appropriate season.
This post has been updated since its original publication in 2008.