Lice Knowing You© Lice Detection Spray helps you detect lice in minutes. Don’t spend hours doing a lice treatment when you’re unsure if you have lice. Just spray hair with the The Lice Knowing You© Lice Detection Spray and the follow the easy, step-by-step instructions. The lice detection spray is all natural, chemical and pesticide free. It’s the only safe and effective way to detect head lice. Remember, a five-minute check will save you weeks of stress — so, once a week — take a peek!