Great list. I know for a fact that mayonaise does kill head lice. Actually anything greasy, such as petroleum jelly. You saturate the head and hair and cover with a shower cap for several hours.

I used to keep foster children and many of them come with head lice. You can't use the chemical too often because it causes brain damage. Very harsh. Mayonaise not only killed the bugs it made their hair shiny and pretty. Plus it made the residue easy to comb out.

Sorry, I know this sounds gross, but thought I would share it anyway.
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