I have the mid-sized cricket keeper (not the one with the tubes that go into it, but one with a regular top with a trap door in it) or when my son fed his toad crickets and never had an escapee... but you could also invest in a 5 gallon glass (or plastic) tank with a screen lid, Shouldn't run you more than $30.00 and would be an effective way of keeping escapees to a minimum. How are your crickets getting out?

Not this one:



but This one:


Then we would just use a toilet peper tube to get the crickets out when needed.