At first I didn't want to pay for it because 9 dollars for 3 small packages was a little bit too expensive for me. So I made my own, I used the most disgusting things that available known to man lol. Guess what? Nothing! My mix didn't attract a single fly, I mean not even one fly. I continued to let my mix cook under the sun for a couple days, still no result. But as soon as I mix the bag into my mixture. BAM, thousands of flies flew in like nobody business lol. My trick is that, after the container is full, I use the strainer to get all the flies out and reuse the mixture. It works like a champ and save you ton of money. As long as you continue use the sauce, it will attract flies. Top off with just regular water as you like.