I have done many tests with these traps and have been unpleasantly surprised to see so many people using them to collect bees, including honey bees. If I could do one thing with this review, it would be to ask others to please not trap honey bees.
For wasps, I use apple juice filled to just under the bottom cones and then I hang a strip of lightly cooked bacon near the top. This bait combination attracts wasps and hornets without attracting and trapping the very valuable Honey Bees.
Versatile, easy to wash out, convenient to hang and place, easy to see what's inside. If you want to dispose of the bugs inside the trap, just put the entire trap (bugs and all) inside a gallon size zip locked bag... zip it closed and then place that inside your freezer for 15 minutes. After 15 minutes, everything in the trap will be dead and you can wash it out right into your garbage disposal without being concerned about flying insects getting out.
These will hold up to years of use and I definitely recommend them without hesitation. But Please... do not trap honey bees, and for that matter, don't trap orchard and mason bees as they are extremely valuable pollinators.