Best Sticky Traps for Flyers

About to go out shopping and just had a thought. With summer setting in I should by fly strips before I say damn I wish I had fly traps. What's good these days, no chemicals, that attracts as well as traps?

I usually just use the hanging strip ones in a few strategic places and use a product called fly bait mixed with some beer in a small cup or bowl hidden somewhere attracts and kills them but it is a chemical type and is in granules

Catchmaster rod type. Just a glue board in the he shape of a tube with an attractant you put on it. Dont get it on your hands or they will literally smell like feces

tractor supply has 10" rolls you tear off and place them or let them hang