the snopes.com DOES NOT recommend using dish soap...PLEASE DO NOT TRY IT.
Read further into it, snopes.com tell of emails and things that are FALSE and this one is a false home remedy that could actually make a tick put more toxins into the body of the host....please read the article all the way before assuming it's telling you to DO it, DON'T TRY THIS METHOD PLEASE.
snopes.com: Liquid Soap Tick Removal