This question arose this morning on our hack out. My friend cleans her horses sheath every 3 weeks and books it in her diary! (She must enjoy it or something) I know it has to be done, but most owners don't even touch it, saying in the wild nobody would go out and clean it for them. My boys hate it getting cleaned! Star will not tolerate it whatsoever! So I don't do it very often. Has anyone got an easy way of cleaning the sheath or any idea how often we should do it?