I am a very hands-on Granny and often take care of my grand children aged 9,8 and 7. The girl who is 8 is scratching her head again and I'm sure its those little visitors and I'm at my wits end as my son and DIL are always putting those insecticides on the childrens heads and I know its not good for them. Someone mentioned a nit-nurse service in schools on MN and I cant remember their name. can anyone remember as I think it would just ease things all round if everyone in the school was checked and treated if necessary. Thank you