I don’t watch television too much, but I often see these commercials for Mr. Propper or something, that’s used for cleaning your pipes in case of clogs or bad odors. Every time I see them, I remember to clean my pipes, as I share the drain with the next door neighbor and we often get bad odors in our kitchens. But here’s the catch: I don’t use Mr. Propper or any cleaning product. What I use is a combination of three, very common kitchen ingredients, probably very familiar to many or all of you: vinegar, baking soda and water. So what I do is boil a liter of water or so, put a cup of baking soda in the drain, add a cup of vinegar and quickly two cups or more of boiling water. It basically does the same as the commercial cleaning products. The difference is that you don’t get that detergent smell after the process. The baking soda and the vinegar react violently, producing and effervescent product that cleans your pipes and burn any kind of grease in the drain. I don’t know if it’s common to you, but I often use this combination to clean my own digestive pipes (of course without boiling the water). It’s not recommended for frequent use in your body though. For pipes, it’s just fine, at least I can’t think of any way it could damage them.