Head lice

It’s a new school year and my daughter just started (kinder) and she has been scratching her hair. I looked and noticed nits in her hair and found a couple lice.

Does anyone know of a good way to get rid of them. I’ve been doing the lice treatment kits about 2-3 times last month but it doesn’t seem to be working and now it’s coming to me since I’ve found a couple in my hair 😩

I had them when I was younger and I just remember there was this Mexican treatment that had actually got rid of them I just can’t remember what it was since it was when I was in elementary school early middle. If there’s something else or if anyone might know what that is, please let me know. I hated having this when I was younger and I just hate my daughter having it now.

Please help.