I just made the post below on how to convince one's Dad to let them own dubias. Just substitute Mom and use below:
Get a nice big order of crickets in and let your Dad smell those nasty suckers for a few minutes. Especially if they've been in the bin for a week or so - Dubia are odorless.
Then place that nice order of crickets next to his bed for the night and see if he sleeps - Dubia are silent.
Leave those crix by his bed for just a week and let him see how fast they die. A cricket's entire life cycle is 8 weeks. Dubia live for 18-24 months. Do the math on the economics with him.
At the end of that month with you taking crix out of the bin for food and after your father has completely lost his sanity due to sleeplessness and he smells like a giant pile of decomposing whatever after sleeping with the bugs, look around the house with him and see how many fugitive crix you have. Some of them escape, I don't care how careful you may be. In a month, you will have a cricket infestation because Dad didn't want tropical roaches. Dubia are too lazy to climb out of a Rubbermaid bin. If you want extra security, smear Vaseline around the top 4 inches of the bin on the inside or, if you can get it to stick, put clear packing tape around the rim. They definitely will never make it over the clear side.
Crickets cannibalize their young and keeping the different sizes of crix separated when you breed them is a pain in the... - Dubia do not eat each other. If you have way too many adult males, the most they'll do is chew on each others' wing tips.
As another poster stated, dubia can't live on the food available to them if they escape, nor can they reproduce well below 82 degrees.
Even in their native homeland of Guayana, they do not infest homes. Tropical roaches actually prefer to live in leaf litter, such as a jungle floor would have.
Dubia don't carry any parasites that I know of. Crix can harbor pinworms and, since their cousin the grasshopper can carry tapeworms, it's likely crix can, too.
To my knowledge, none of the bacterial or viral illnesses transmissable from common AMeric or German roaches/roach waste to humans can be carried by dubia.
If this doesn't convince him to buy dubias, he'll certainly never want to see another cricket again!
Frank