If you are using DMSO as a carrier for herbs to treat BONE SPURS topically, two of the best herbs to use are HORSETAIL (Scouring Rush) & STINGING NETTLE (Urtical Diorica). I would suggest adding the liquid extract to the DMSO instead of the dried herb. Equal amounts of each would probably be okay. Herbs & homeopathic remedies high in silica content have been used a long time to treat bone spurs & help remove them. The herbal teas of the same plants can be used internally to treat the condition, as well.