BTW, this works indoors or outdoors, so you can hang it by your garage or by your front porch to catch those suckers before they have the chance to enter your home.
Promising review: “I tried a hanging a different type of trap with an attractant first, but the vomit-like stench was unbearable. Then I tried chasing the flies around with a bottle of Lysol, spraying indiscriminately (ineffective, and not recommended). That’s when I became desperate, and ordered these sticks. Within 24 hours, 90% of the flies in the room had been captured. I baited the trap with syrup, as suggested in the directions, and hung it above my sink, where I know the flies gather. I couldn’t be happier with the product.” —Lazarus
Get it from Amazon for $5.87.