You are looking at 2 x Wasp bottle top traps, perfect for keeping those little angry things away from kids, food, animals - and at least giving them something else to land on rather than you!
They fit to a standard 500ml, 1litre, 2litre pop bottle with a normal thread. Easy to empty as you can just unscrew and dispose of the wasps as you see fit! (if you can't fit it on some bottles as various threads are sometimes different then it should just hold ok or maybe use some masking tape to secure).
I won't give any tips on baiting for the wasps but i'm sure there are plenty of hints and tips on the web for you to try
The items are printed in yellow PLA, a bit more attractive than the standard black ones i found in shops (apparently wasps are blind to black and red anyway?!) so thought i would have a go at making my own. The internal tube has been extended from my original design to stop the wasps finding their way back up the tube, and the holes on the top small enough to not let the nice bumble bees in!
Note: bottle of pop not included!