Commerical, over-the-counter chemicals or hair formulas CAN kill live bugs. They don't kill eggs.
Our service includes two steps. First, we eradicate all live bugs using only toxin-free natural solutions that have no harmful side effects. Second, we follow up with manual removal of nits/eggs. This second step is absolutely necessary.
Removing head lice and their eggs isn't trivial and should be done by professionals who are trained and know what to look for.