finally got hold of some neem oil after reading a thread about it being great for piggys with skin probs. pigs have been treated with xeno 450 but i would like to use neem oil on their coats to..ive heard it really helps their skin. now ive searched for the thread again but cant find it, and cant remember the dilution quantitys. how many parts neem oil to how many parts sunflower/carrier oil? and how long do i leave it on...24/48/72 hours before washing off? any help gladly received!