These Riedel metallic pellets will solve your woes of cleaning your decanter/carafe especially when there are sediments.
These tiny stainless steel pellets remove all dirt, residue and stains from inside your decanter or carafe. Just fill the vessel half way up with water, add the pallets and swish it around for about two minutes. That's it! When you are done, carefully empty the content onto a mesh strainer, rinse the pellets, dry them and they will be ready for the next use.