"Works very well"
I really like this product. My sister and I have been using it for about 4 years now and it is really effective against all types of flies. Be careful not to apply it right before a heavy rain as it can wash off. Much better than any spray I've used. Lasts about 3 weeks for our horses.
I have used this for a few years now. It takes a few applications to get the full effect of this product...but once you have it in effect it works really well! I love it.
"Ticks are GONE"
We live adjacent to a wilderness area and have wild elk and deer on our property year-around. In warm years the ticks would carry us off without Spot-On. I can putthis on an infested animal and the ticks--ALL of them--are gone within hours.
"Does not phase flys"
Put this on my horse and the flys are just as bad as if I had put nothing on him. Sprays work 10X better than this stuff.
This worked okay on my pasture horses.