Combing Right tool For the job
Microgroved stainless steel fine tooth comb will comb out eggs, egg cases, all sizes of lice
Dry combing is very painful and the lice will flick out only to climb up to the head again
My preferred combing agent after many trials is a small amount of coconut oil warmed up in the hands and rubbed through hair. It doesn’t drip very much. Make sure there is a good coverage. Comb from the scalp to the hair ends, then wipe residue off on a tissue or similar. Do the whole head. Dextrous children can be taught to do their own comb through from about age 7-8. Short hair is much easier to manage.
$9-10 for a comb as above which will last forever.
$5-6 for a large tub of cooking coconut oil which will easily last for up to 6 months for 1 person
Much cheaper than the chemicals