Citrus Circles deodorizing wafers are made of the same blotter paper as deo disks with an oil-based citrus scent applied. They are nontoxic but of course they should not be ingested so please keep away from children. They are individually wrapped and are made in the USA. They are the same size as the deo disks you have been familiar with. There are many other uses for Citrus Circles. You may want to try them in many other places as your garbage can, near your cat box for those pet odors, your vehicle or anywhere you want a fresh, clean citrus scent.