There are a number of grades of borium (and similar
products under different trade names). Road riding on wagon trains I found
that the finest grade worked fine without causing lameness. The horses got
good traction, but slipped enough to stay sound.
I have used snow pads and coarse borium on winter
ice in WI with good results. I did find that as soon as the ice went the
borium had to go. It caused to much traction, which caused overreach with
loss of shoes.
Ed
Ed and Wendy Hauser Sisu West 2994 Mittower
Road Victor, MT 59875