I'd say yes. How are you keeping the kritter keeper exactly (odd question, I know lol)? Is it the small or large? What do you have for them to climb on? It's really almost impossible to prevent escapees, but you can do a few things.
1. I would get some "sticky boards" that attract "bugs" at Walmart and place them where you are seeing the escapees, but NOT in the same room as the crickets you are feeding or in your dragon's room (that's just my opinion, I know most say they are "safe", but you never know, I find crickets on sticky boards all the time...reduces the chance of them breeding by a great deal). They love the bathroom, kitchen, and where the water heater is.
2. I'd get a plastic rubbermaid tub (or an extra 10 gallon glass tank works even better), stick the kritter keeper in there and see if they're getting out simply from the kritter keeper (my best guess). Just make sure they can't climb the sides of the plastic tub (some of the heavy-duty ones have rough edges). You can also put gorilla tape, it's better than duct tape, around the kritter keeper...either around the thing itself or better, on the bottom of the plastic tub, use masking tape to make sure the gorilla tape is stuck to the tub though. They usually get caught right there, but that's not a for-sure thing...they can rip a leg off and still go on, so I'd use all 3: sticky boards, plastic tub/glass tank, & tape.
3. To prevent them from getting out a little more, make sure that whatever you are putting in the keeper for them to climb on isn't tall, length is better, but they need enough space or they'll kill each other/die from over-crowding. You can also tape the the "plastic flaps" shut with just about any tape. How large are the crickets and about how many are you keeping in the keeper at a time?
That's what I do and for the most part we avoid escapees (in an apartment complex, we try to avoid bugs being all over lol). Just some ideas, though
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Abi