Speaking of oils, I tried spraying peppermint oil on a couple of corners in the house where spiders seem to like to take up residence in my house, and after hitting it with peppermint they've never come back.
They're probably under my bed's headboard now. LOL
Oil of oregano is definitely an acquired taste. LOL ! Put three drops under your tongue and hold it there as long as you can stand it before swallowing. Sublingual works a lot faster.