Liquid Fence 1 Gallon  Cribbing All Natural&#44; Cruelty Free solution that stops wood chewing. Long Lasting - proven effective at stopping wood chewing for up to 4 weeks. Worry Free - no harmful chemicals&#44; all natural & non-toxic formula. Safe for horses and ponies. Dries odorless&#44; humans can&apos;t smell it once dry&#44; but horses can.