I don't know I just started using them myself. I've had a sambava panther for about 2 months now, and am new at this. (Other than spending probably four solid weekends reading this forum.) I am currently using them for dubias and crickets, but I also give them fresh greens, carrots, etc, so they should be also getting their hydration from that. The gut-loading diet I found on here, it seems like a very well-rounded diet. I also feed all the feeders this diet all the time, instead of switching to it a couple days prior to feeding them off.