I bought a small box of 20 crickets today for my leopard gecko. I tossed all of the crickets into a small 10 gallon tank then placed my gecko inside to see how he would do but he’s partially blind and had trouble seeing them. Instead I picked them up to prong feed. One of the crickets was missing a few legs and didn’t move well so I stuck it in his bowl. Several tiny round black bugs (so small I can’t get a picture of them) fell off the cricket on impact and started running around the bowl. I looked in the tank and blew on the 12 or so remaining crickets and saw a few more. Some were black and I saw one white one. Are they mites? Should I be concerned? This is my first time having a gecko that needed crickets in about 5 years but when my crested was a juvenile I got them every other week and never saw this.