Sheath Cleanser naturally softens and loosen hard and sharp smegma. Uses: Sheath Cleanser gently softens and loosens hard smegma naturally and safely. Made using very mild vegetable suractants and purest lanolin. The lanolin naturally softens and loosens hard and sharp smegma, which can build up inside the sheath. Vegetable surfactants clean away any debris without removing natural bacteria. Cleanliness: Your gelding's sheath should be cleaned regularly to prevent a build up of smegma - a breeding ground for bacteria. Infection and swelling can be caused by lack of cleanliness and should be checked out by your vet. Smegma: This is the build up of grime, secretions and dirt appearing as a black tar like smelly substance around your gelding's sheath and sometimes down the inside of the hind legs. Safety: Sheath Cleanser is entirely non-toxic and non-irritant - but extreme care must be taken inside the sheath as the smegma can be razor sharp and easily graze this thin membrane and allow infection to set in. Application: Gently clean the sheath at regular intervals. Applying 'Sheath Cleanser' directly to the penis after your horse has relieved himself is probably the easiest way. Cleaning inside the sheath where there may be sharp smegma can result in swelling and infection so extreme care must be taken