What if I get lice?

I’ve heard that if you soak the dreads in rubbing alcohol for 30 minutes and cover the dreads in a plastic bag and then repeat in one week then it will kill the lice and their eggs. I haven’t had lice before so I haven’t tried this so I don’t know if it works for sure, but it’s worth a try, because dreads are part of you and you do not want to give them up easily.