Caustic chemicals: Mustard oil, camphor, kerosene or other chemicals are pasted above the hoof and wrapped in plastic to "cook". Horses often can't stand afterward. To pass inspection, trainers use anesthetic spray to numb sore feet, black polish or baby Submitted by Brenda H. to Animals | Note-it! | Add a Comment ...
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Caustic chemicals: Mustard oil, camphor, kerosene or other chemicals are pasted above the hoof and wrapped in plastic to "cook". Horses often can't stand afterward. To pass inspection, trainers use anesthetic spray to numb sore feet, black polish or baby Submitted by Brenda H. to Animals | Note-it! | Add a Comment ...