Mixing water & oil (antibacterial solution)

[Pompal 09.]

help!
obviously water doesnt mix with oil so i need a bit of help with the following, i think i may already have the answer but just would like to check what you guys think

ok, problem.....

my sisters horse has an ailment in his hoof called "seedy toe" which is bacterial, it can turn the hoof to honeycomb, making it weak, it can affect something called the laminae which potentially will make him lame, and of course it could spread.

he's a big horse with a big foot so im going to need a lot of tea tree!
I think that he should have his foot soaked in some sort of tea tree solution.... he will happily stand and eat whilst he stands with his foot in a bucket

i think the best thing is to mix the tea tree with lavender floral water, and add this to warm water, and let him stand in a bucket with the solution in it.

is this the right thing to do? can anyone offer any other advice?

thanks!

emma.x.