If you wash the hair daily and use the nit comb - yes get the nitmeister and have it on hand. A good practice especially with girls anyways is to wash the hair, apply conditioner so it stay slippery, comb with the nit comb and then rinse out conditioner. No sense in letting a problem get started and find out after the fact. Not that you have to get paranoid and do it daily but a good weekly comb out works wonders. My kids had really flaky hair due to eczema and the nit comb helped for that too as it got the stuff at the scalp and pulled it out.

Don't use the medicated soaps unless you find live lice as it is toxic. Some evidence that using tea tree oil with shampoos helps keep lice uninterested.

You will get lice notices 2-3 times a year once child is in school and more often for some schools and that is only the parents that actually tell the school - hence the shampoo and nit comb method of prevention.