I have used a spot treatment for my dog for years and just saw an advertisement in a trade publication for Equi-Spot by Farnam which is the same thing only for horses. It protects against flies, gnats, mosquitoes, and ticks with a citronella scent. Its also supposed to be sweat resistant and stay on when your horse gets wet. I'm looking forward to trying it out this year.

Is this a more natural product then? If it is citronella based it sounds like it would be. What of the effectiveness-is it supposed to be good?