So I installed one of these in my house and it worked! It eliminates all odors and insects. (Which was bad. We have an old house) The best part is that I work as a contractor and do a summer rental that sometimes sits vacant for a while and starts to smell, not to mention the bugs that come in through the pipes. I bought one for each house and it eliminated that smell and stopped the bugs! A product that I can easily install and forget. priceless! I recommend buying P Trap Pal's.