I do... Sad thing is I found one crab - sliced it in two (the one mantis lost both his raptorial appendages) but that was the day before he molted - I did not realise he was about to molt. So that was one crab wasted
At least now he has two 50% functioning raptorial appendages. The little one caught 2 crabs and killed them thus far, and is constantly creating a hollow in the LR using his appendages.