Find out how to catch them with just leftover food and drinks!
Step 1: Drink up!
Leave it in a populated area of crickets over night. (image 1)
After that you should find some crickets have found their way in for a little drink. Only thing is... They can't get out. (image 2)
I can't be sure that your crickets aren't so smart as to figure out how to get out, but it's very unlikely!