I've tried so many different things over the years as bait in my fly traps. The traps themselves (like this) work great when they have a good bait / attractant inside.
... but I've yet to find the "perfect" bait
I've tried all kinds of things: raw fish, chicken-poop, vinegar + sugar combos, professional fly-bait concentrate, etc. etc. etc.
So far, none of them work GREAT. The only ones that seem to work "ok" on houseflies is the faw fish and chicken poop, but even those don't seem to "pull them in" like I'd expect or want.
Maybe my expectations are too high? I remember as a kid seeing big gallon-sized traps FULL of gazillions of flies, and I'm really wanting to duplicate that level of success.
So, WHAT DO YOU USE for attracting houseflies?
Here's my setup where I've been testing different attractants. In this case it's raw salmon on the left (with a few flies), and a "professional fly bait liquid" on the right (zero so far... and it smells TERRIBLE).
... but I've yet to find the "perfect" bait

I've tried all kinds of things: raw fish, chicken-poop, vinegar + sugar combos, professional fly-bait concentrate, etc. etc. etc.
So far, none of them work GREAT. The only ones that seem to work "ok" on houseflies is the faw fish and chicken poop, but even those don't seem to "pull them in" like I'd expect or want.
Maybe my expectations are too high? I remember as a kid seeing big gallon-sized traps FULL of gazillions of flies, and I'm really wanting to duplicate that level of success.
So, WHAT DO YOU USE for attracting houseflies?
Here's my setup where I've been testing different attractants. In this case it's raw salmon on the left (with a few flies), and a "professional fly bait liquid" on the right (zero so far... and it smells TERRIBLE).