I was a school nurse for a long time. So here are my tricks for head lice. 
As previously mentioned cheap conditioner (or mayonaise) and a metal comb 
and patience to remove the nits from the hair. Mostly though you have to be 
really careful about removing lice/nits from the environment. Heat from the 
dryer (hot cycle done again after clothes/towels/bedding are already dried). 
Water in the washer doesn't get hot enough to kill anything. The real trick 
is to bag up anything fabric you aren't currently using and leave it for 40 
days until hatching nits have no blood on which to feed and all die). Vacuum 
frequently and if it's something you can't toss into the dryer on hot - bag 
it and don't use it. I would not ever suggest using lice shampoos on a baby 
or small child. Also if you are using lice shampoo on an adult / older child 
remember that heat opens pores and allows more to be absorbed. You want to 
get it on the hair but not have the person be sitting in a hot bath while 
they are waiting for the bugs to die. You could also iron things - say 
pillow cases to make sure there was plenty of nit/louse killing heat. 
(Ironing pillow cases also recommended for ringworm on the scalp). Email me 
off list if you want more specifics.  -Susan 

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