the folks from sticky tongue (miner-all) make a gut load called Vit-all. Its a powder you just mix with water so it turns into a paste. It has lots of good stuff in it and if you have a picky BD, it seems to make the crix more apealing (at least my guys seemed to eat more when I use it).
FYI, while gut loading (especially hydrating)is beneficial, dusting delivers more nutrients as there is more surface area to cover on the outside of a cricket than the inside of their stomachs. I love the T-rex powder since it sticks to the crix so well. it also helps balance the phosphorus:calcium ratio.
-----
Bennett

Home Of The Florida Orange
www.beardiedragon.com