rubbing alcohol and also salt question
I have two questions in one. First question--I had a lesson yesterday and its been very hot where I live these last few weeks, like highs in the 100s everyday. My lesson was at 7:30 when it was in the mid 80s and my trainer told me to sponge my horse's chest and neck down with rubbing alcohol and water mixture before the lesson to help keep him cool. I've never heard of this before, does it really work? Will it dry out my horse's coat a lot?
Also, since this heat wave, my horse has been going through salt blocks very quickly. I've had to buy him two already. Can I just contribute this to the heat and him sweating a lot of salt?
Oh, one other question too, we have a show coming up in two weeks and I've heard some people talk about putting Gatorade in horse's water to encourage them to drink more while showing in the heat. My horse is usually good about drinking at shows but I want to be extra safe about it, so would this be a good idea? How much do you add?