kimmsr, Thanks for the link...I had been looking at growing mealworms for my chickens for added protein...great to know I can get poo from the beetles. Peggy

Looks like a centipede or millipede. If it's happy in the soil in your pot, it's probably much too soggy too often. There's a Bromeliad forum if you would like to browse care info.

Years ago i had a pet store and also my own private collection of reptiles. I used to raise mealworms so i could have freshly hatched mealworms to feed baby herps that were just too small to handle the ones from the commercial growers. The castings went into my houseplants and they did great. So if you get them for free, go for it. Now as far as which is better, mealworm or earthworm castings, my intuition says earthworm. My reasoning goes like this: The digestive process is different. The mealworms eat 'meal' a mixture of grains etc. They convert the sugars and protein pretty much directly into their own protein and fat. With the earthworm, they can do the same to some degree if the particulate size is small enough. However they mainly rely on microbes to break down the cellulose and macrostarches of their foods into sugars and amino acids in a form they can absorb. The resultant feces is filled with microbes that seem to have an extra beneficial effect in garden soil. You can look up some studies on this and comments of mucous-like compounds that offer surfactant effects, etc.

It sounds like you got some black soldier fly larvae. Check out the link and see if this is what you have? If it is then you can do some research and figure out what you want to do. Here is a link that might be useful: Question about BSFL