Tell her this: (and keep calling them Dubia's rather than Roaches or call them Amazon Beetles -- a lot of folks just have issue with the Roach label)
[They aren't really beetles . . . beetles are in Order Coleoptera and Roaches are in Order Blattodea,
but it's the "Roach" label that makes most folk immediately slam the door shut and scream in shuddering revulsion,
without understanding that not all "Roaches" are "Cockroaches". Finding something different to call them can make a
world of difference and let some folks go in with a more open mind. But to be really honest, just stick with calling them "Dubias"]
- Crickets CAN and WILL live and breed at room temperatures (if any escape)
- Dubia's CANNOT live or breed at room temperature and humidity levels - so IF any escape they will just die.
[To be completely honest, Dubia's can live at some room temperatures, depending on where you live. They start dieing quickly at temps below 70 F,
(not instantly, but quickly) and at temps below 80 F they breed very slowly, if at all (90-95 F is recommended breeding temps).
This makes it HIGHLY unlikely that they could infest your house even if you do have an occasional escapee, unless you live in a hot and humid area
like southern florida (where they are banned by the way)]
- Crickets can climb and jump - escapes are easy and common
- Dubia's cannot climb, cannot jump, and are relatively slow moving - escapes are rare
[They can climb some, but are very poor climbers. The small nymphs especially can do some climbing on the silicone seams if you
are using an aquarium or on textured plastic tubs. A lid is always recommended! Putting a stripe of smooth packing tape around the
inner walls of a plastic tub will stop most nymphs, and a good lid should stop the rest. Large nymphs and adults are even worse climbers
than the small nymphs, but again a good lid will pretty much prevent escapes]
- Crickets make noise (everyone who's ever owned a home has had to deal with a chirping cricket that you just can't find -- now imagine several hundred of them)
- Dubia's don't make any noise
[It's been pointed out that they do make noise as they crawl around in the bin. True, but that's very minor (if a bit more creepy sounding)
than the racket several hundred 'singing' crickets can make. Some species of feeder roaches also hiss a little. I've never heard my Dubias do it, but
I won't rule out the possibility]
- Crickets (especially breeding bins of crickets) STINK
- Dubia's have a very mild odor and a lot of folks can't even smell that
- Crickets can and will bite and chew on your dragon
- Dubia's don't bite, period.
[Edited for clarity and complete honesty of my arguments to try and sway a reluctant parent/significant other about keeping Dubias over Crickets]