Plastic containers may be slick enough to keep crickets from climbing out. Half of each sex is ideal. Add a small container with poultry mash and a saucer half-full of water that's filled with cotton so young crickets don't drown. As an alternative, put a small screened container of crickets in a warm, dry place like the top of your hot water heater . If you plan to grow crickets all year you need warmth.
Growth slows in winter.
At 80 degrees it takes crickets about three months to mature. At 60 degrees you can wait much, much longer. So as the temperatures drop add an aquarium or terrarium heater, of simply a light bulb in the container can keep it warm enough for year-round production. Used under License.