Products fall into three main types: hair-treatment sprays that kill lice and eggs on contact, home sprays formulated to kill lice on furniture and bedding, and daily leave-in prevention sprays intended to repel lice.

Some sprays say they kill lice and eggs on contact using sodium chloride, while others describe a suffocation-style, pesticide-free mechanism.

Labels in the sample set list suggested minimum ages including 6 months and up, 1 year and up, and 6 years and up. Recommended ages vary by product, so check the specific product label before use.

According to product details, spray onto dry hair from a few inches away until saturated, allow the product to air-dry or dry naturally, then use a fine-tooth comb to remove dead lice and nits.

The product details shown emphasize pesticide-free or non-toxic formulations; some listings also note paraben- and dye-free labeling.

Listings show spray and liquid forms; some kits also include a leave-in prevention spray or an all-in-one shampoo alongside treatment products.

Review summaries report simple spray-on or leave-in application and easy combing for many users, but several reviews note the product may not fully eliminate all nits and can require repeat applications or additional combing.

Review summaries mention a licorice-like scent and reports of an oily, runny texture that can leave a greasy film requiring multiple washes.