I've found that lining their kritter keeper with egg crates helps somewhat, because you can just replace it when it gets dirty. But inevitably some cricket waste will still end up underneath. Seems like they're just a giant mess no matter what (and I keep a lot fewer at a time than you guys!) I also haven't found any food that helps them live any longer (yet??). Have heard stories about house crickets being kept as pets in some ancient Asian cultures... No idea how they did it without them dying constantly. Have resigned myself to being terrible at cricket husbandry and just buying as few as possible lol.