A significant aspect of housing for many of the roaches is the barriers that prevent animals from being all over the lid when opened for feeding and watering. Of course there are various nonclimbing roaches like Blaberus that require no barrier. Vaseline has proven very successful in keeping most glass climbing species under control as long as it is reapplied every so often and kept clean. The teflon paint (sold as bug barrier, bug stop and various names) seems to work OK on lobsters and is fine for a barrier as long as the lid is airtight but it doesn' seem to keep most species from climbing. Anyone have a different experience or find a new type of barrier?