Your look at alot of problems in beardies if you use any particle substrate. Crushed walnut shells are the WORST things to put them on along with Calci sand and other similar products. Your beardies have been through alot I can tell seeing how they have no back legs, either put them on paper towels, or if you want nicer get ceramic tiles cut. And please tell me that they are not housed together

Do not put them on white millet either