I love dubia roaches!
I hate crickets.. I've had a tarantula for over 10 years and the biggest thing I hated about having her was having to buy crickets. I really hate crickets, can't even say why.
I first got roaches a few years ago, had 4 females and 1 male, fed a female to spidey, then they started breeding in their "holding jar" and I realized I had no more need for crickets

Within a year I had hundreds and it was perfect, they feed the fish, the geckos, the tarantula, and any large males I don't need get fed to the fox.
The cat likes to knock over cricket containers so she can chase them, not eat, just chase. Problem solved!
Then we had a sudden move and the roaches got left in the truck during a heat wave.. Hundreds of dead roaches.

I bought more (all babies) and I'm expecting babies any time now!
Fish love them, spidey loves them, geckos love them, foxy loves them, and with a breeding community you always have the size you want/need.