I was constantly making runs to the pet store for crickets & was a little frustrated at the inconsistency of size--sometimes they would be too big for my red bellies. Now I've started buying them online in large quantities and keeping them in critter keepers--it works great. I put the tubes in instead of egg crates & they hide in the tubes, so I just take a tube out & knock some into a container w/a little calcium in it & dinner is ready! It ends up being a lot less expensive--if the weather is moderate you can ship them 2nd day & the shipping is much more reasonable.