Originally Posted by Kmc
Heat + Darkness + Protein Smudge will trap the uneaten crickets like metal shavings to a strong magnet.
I was impelled to use pinhead to 2 week old crickets for a significant timeframe in an accountable format caring for auratus, leucomelas, tictorious, pumilio, M. pulchra, M. aurantiaca; where I had to geek-develop strategies to vanquish risk-to-benefit in feeding crickets to darts. I did not care whether I sold them. I only cared if they were content.
I can share with you what worked for me if you like, with some describe of your scenario.
So, putting some dog-food with a bit of water sludge under a coconut in warm corner will attract them. Maybe put the coconut on a plastic lid or perti-dish and you can easily get them out of the tank, right?