Alto Lab Bug Shield Insect Repellent

I've used this product for a few years, but only as a spray onto my horses flymask before I put it on him. I spray, let it dry then swap flymasks over once a day. It's an oily product which is annoying, also has a very strong smell. Works well tho. I keep in my outside fridge to stop the heat making the product leak out of bottle (qld)