Exo terra tank backgrounds and crickets

[DIYMedic]

have some new exo terra tanks I got, having trouble stopping the crickets from getting behind the foam background. Anyone have any good tricks to keep them out and in the main space?

 

[acpart]

Moisten some paper towels. Roll them up and jam them between the top of the background and the top of the cage. When they harden it will be kind of like papier mache. Do that for any other gap you can find.

Aliza