Repashy Insect Gut Load.
You could keep a small baby food jar lid filled with the above product, and rotate it out twice a week or so to keep its freshness if not all consumed.
You can buy it in various sized, resealable packages.
European distributor: Napalm Reptiles
Repashy Insect Gut Load or Repashy Superfoods.
I tried this stuff in the tanks but it got all funky from the mistings. I ended up getting the water/gut load gel cubs, they last longer and don't get yucky near a quickly. Plus they soak up any water from they misting so they don't get to dry.
24 Ounce Cricket Total Bites
Just my 2 cents. Hope you find something that works for you!
TTFN
I use this solution for all my geckos!
It works well!
:biggrin:
I know this may sound a little weird but I use tropical fish flakes. They seem to withstand getting wet, the crickets adore them, and I have not observed any adverse effects to the geckos.