Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Only works for the very large Lice

My daughter has very long, thick hair. I used Nix and she mysteriously got horribly sick 48 hours later. The doctor told me it couldn't be the shampoo, but I am 100% convinced it was! It didn't even work! I have been picking out nits and live bugs from her hair every day for almost a week. I bought this thinking it would save me a lot of time. NOPE. I ran it through her hair yesterday and it didn't give off a warning that anything was around. I thought...cool, she's finally free of bugs. Boy was I wrong! I was looking through her hair this morning and saw one crawling. I grabbed the Robi comb and ran it over the bug. NOTHING. The bug slid right inbetween the teeth of the comb. I grabbed my cheap $7 metal comb and ended up getting SEVEN bugs out of her hair! The teeth of this comb are just too widely spaced. It didn't get any of the bugs off her head at all. The cheaper alternative worked much better and is a lot cheaper!