Is there anything besides flea medicine that can get rid of fleas on dogs?

I just found out my Golden Retriever's lower back and tail is full of fleas. I would like to start getting rid of them soon as i can, is there anything you can use to drive them away besides flea medication?
The reason im saying is because im not sure when im going to be able to get it, so i wanna know if there is anything else that will work so i can start trying to get rid of them.
 
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