i posted this awhile back.. and it has worked amazingly..
I love my Dubia and have been hunting and reading around for the best all around feeder for them and found that there really isn't one!
I've read everything from people throwing in items not fit for human consumption to totally organic fruits and veggies..
Knowing that they need high protein diet (different from many species of roach) I started my search.
Ferret food was mentioned a lot so I looked around and found, Pretty Pets ,"Natural Gold" - it's 50% crude protein, then I went through dog and cat foods from soup to nuts and found, All natural - Good Life Recipe Catfood at 34% crude protein, and finally add Cody's ProGutload (progeckos.com) I've used it for over a year for my mealies and crix as gut load. It's great and has 20% crude protein and a ton of everything else they need; plus they already love it by itself...
Each of these are loaded with vitamins and minerals but I add a bit of Vionate (all around multi vitamin and mineral) and blend the whole mix for ease in scooping and even distribution of each ingredient.
Of course I still throw in some romaine, orange slices, or bananas once or twice a week. But this seems to be great mix and costs around 30 bucks and yields enough for at least 6 months.
I also bought my Dubia from BlapticaDubia.com - he sells a roach buffet that works pretty well also.. but since I'm feeding them to my leopard geckos who may become breeders and are for sale, i wanted something I knew would bulk them up well and was easy to get on my own and cheaper..
I ground mine up in the magic bullet so it's like a course sand consistency and keep it in an airtight container..
You really can find all that you need in a petsmart, petco, etc..