I use this fab product - fly problems are definately better now! I spray on neat as I did a patch test on my horse first with no reaction. I use it on his mane and tail which is a great detangler and he smells fab as well. I cant praise this product highly enough!!
I use the dry oil spray directly onto my horse - but it is on his mane, tail and tummy so not bare skin in the sun. The dry oil is designed to be used neat. The bath oil I do mix with various essential oils, dettol and then dilute down with water.
I also use in on myself - lovely smell and does seem to discourage the mozzies and midges.