Aborbine Super Green. Can use it on horses and dogs and humans. Love it, smells so good too! I have a samoyed and let me tell you there is one body of hair that is very hard to find ticks on. I usually have a flea and tick collar on him year round and they do work just gotta remember to change them every 4 mos. I usually give him a good spritz with super green too to help. We live in a heavily wooded area that has lots of tall grass so the more the better.