You know it's time to call a lice service when your child is scratching uncontrollably behind their ears. A quick lice screening will confirm whether you have lice infestation. Do not start lice treatment until you are sure your child has lice. Frequently dandruff is confused with head lice. Come in for a FREE Lice Screening. We have a new lice treatment center located at 2-8 Haven Avenue suite 201 in Port Washington.