I use a cricket keeper. I order the crickets online because the local pet store was very inconsistent with cricket size, sometimes they were too larger for my FBT's. Online you can order very specific sizes such as 1/4" 3/8" 1/2" etc. When I buy the small ones, occasionally a few may get out of the cricket keeper, so I leave it in the bathtub, (except when I'm showering of course) It works great, if one gets out they can't escape and they are easy to catch.