Carr & Day & Martin Belvoir Tack Cleaner Spray Step 1. Gently lifts ingrained grease, sweat and dirt to enable dirt to be easily wiped off. The pH natural formula will not rot stitching or over-dry the leather, whilst the anti-fungal formula helps prevent the growth of mould and mildew. Can be used to hygienically remove existing mould and mildew from affected saddlery, leaving the perfect surface for the immediate application of a conditioning soap or oil.