Head Lice: The Comb-Out That Never Ends
The treatments stopped working, the free plastic comb snaps and misses, and a week later the nits are still there
The short answer
When lice treatments stop working, the answer is not a stronger treatment. It is a better comb and a schedule. Lice can resist the chemicals in the common kits. They cannot resist being combed out, and the comb is the treatment when it is a proper one: steel teeth set close enough to strip nits off the hair shaft, used in sections, on wet conditioned hair, repeated across the hatch cycle. The Nit Free Terminator holds 4.7 stars from 16,993 ratings on its Canadian Amazon listing (November 2026), where it sits second in its category, and it is the comb professional lice services use. The honest cost is time: a careful comb-out of a full head takes a while, and the schedule below runs about two weeks. There is no version of this fix that is fast and works.
Why does this happen?
The kits fail for two separate reasons. The first is resistance: lice in many areas no longer respond well to the insecticides in the standard treatments, so the treatment kills some lice and leaves the rest. The second is the nits. Treatments are weak on eggs, and the free plastic comb in the box has teeth too far apart and too bendy to strip the eggs that survive. A week later they hatch, and the cycle looks endless.
A nit is glued to the hair shaft close to the scalp, where it stays warm enough to develop. It hatches in about a week. That timing is why one comb-out never ends an infestation: the eggs you cannot see today are next week's lice. Combing on a schedule, every few days across two weeks, catches each wave as it hatches, before it can lay eggs of its own.
Distance tells you what you are looking at. A nit within about a centimetre of the scalp may be live. An empty case further down the shaft is history, left over from an old infestation, and schools and parents fight over specks that are long dead. The comb-out treats the head. The distance rule tells you when to stop worrying.
The fix, in order
Each step costs more than the one before it, so stop at the first one that solves the problem; the product is there only if the free steps run out.
Free step
Wash, condition, and section the hair
Wash the hair, then work in a generous amount of ordinary conditioner and leave it in. Conditioner slows lice down and lets the comb slide. Comb the tangles out with a normal comb, then clip the hair into sections you can finish one at a time. Work under a bright light, over a white towel or a bowl of water, so what comes out is visible.
The product step
Comb every section with the Terminator, root to tip
Draw the steel comb through each small section from the scalp to the ends, at a slight angle, and wipe it on a white tissue after every pass. Live lice and nits show on the tissue. Repeat each section until a pass comes away clean, then move on. This is the treatment step; the comb does what the kits could not.
The product for this step
Nit Free Terminator lice comb
Habit step
Repeat on the hatch schedule, then check weekly
Comb again every two to three days for two weeks, which catches each hatch before it matures. Wash pillowcases, hats, and brushes in hot water, and dry on heat. Furniture sprays and bagging toys for weeks are not needed; lice live on heads, not sofas, and die within about a day off one.
The evidence, in tiers
Tier 1 · The method
The method is the wet combing protocol school nurses teach: conditioner, sections, a fine steel comb, root to tip, wiped and checked each pass, repeated across the hatch cycle of about two weeks. Mechanical removal has no resistance problem, which is why it is the standing answer when treatments fail. Chemical products are drug products; this page makes no claims for any of them beyond their labels.
Tier 2 · This product
The Nit Free Terminator holds 4.7 stars from 16,993 ratings on its Canadian Amazon listing (November 2026), ranked second in lice combs there. Its listing's feedback split reads 149 positive against 11 negative mentions for effectiveness, and 66 positive against 3 for nit removal. A lice clinic comparison read for this guide also ranks it first among the devices it tested, and professional removal services use it as their standard comb. We have not combed a head for this guide.
A record near seventeen thousand ratings is the largest on any page in this family. Its split matters as much as its size. The negatives gather on hair pulling and on thick hair being slow work. Both are technique points, and the ladder is written around them. They do not claim the comb fails to remove lice and nits.
Tier 3 · What owners report
Owners, many of them parents who arrived after kits failed, describe the steel teeth taking out nits the plastic combs left behind, and infestations ending on the schedule. The complaints name the work, not the tool: a full head takes a long time, the comb pulls if it is rushed, and thick or curly hair needs smaller sections and more conditioner, not more force.
The alternatives, conceded where they win
| Option | What it is | The honest verdict |
|---|---|---|
| Nit Free Terminator comb | Stainless steel comb with grooved, closely spaced teeth | The pick: the professional standard, a very large owner record, and teeth that strip nits instead of sliding past them. One comb serves the household for years. |
| A dimethicone lotion treatment | A silicone based lotion that coats lice rather than poisoning them | The treatment row for families who want a product step alongside combing. It works by coating, so resistance is less of an issue. Label claims only on this page; follow the product's own directions and age limits, and comb as well. |
| Conditioner and a basic fine comb you own | The budget method: the same protocol with a cheaper comb | Free, and the protocol still works, only slower. A basic comb misses more nits per pass, so sessions run longer and the schedule matters more. It is the honest budget route, not a false economy. |
| The free plastic comb from a treatment kit | The short, bendy comb packed with lice kits | Named here as the fail row, from the owner record itself: teeth that flex, space too wide, and handles that snap are why the comb-out never ends for many families. It is the thing this page replaces. |
The honest price comparison
One steel comb costs about what one treatment kit costs, and the kit needs buying again each round while the comb does not wear out. Spend the kit money on the comb once, use the conditioner you own, and keep the schedule. Paying for a professional removal service is the upgrade for families who cannot face the hours, and it uses this same comb.
Where it falls short
The weaknesses below come from the product's own review record. Hiding them would make this an advertisement, so they are here.
- It is slow. A careful first comb-out of a child with long or thick hair can take an hour or more, and the schedule asks for repeat sessions over two weeks. Families who rush it get the pulling complaints in the record.
- It pulls and can break hair if it is forced. The teeth are made to grip the hair shaft. Small sections, plenty of conditioner, and a steady angle are the method, and skipping them hurts.
- The comb alone does not check the household. Miss one infested head, a sibling, a parent, a visiting cousin, and the cycle restarts no matter how good the combing was.
- It removes lice and nits. It does not soothe an irritated scalp or treat infected scratches, and those need their own care, with a clinician if the skin is broken or weeping.
The product, in short
Nit Free Terminator lice comb
Questions people ask next
How do I tell live nits from old empty cases?
By distance and look. Cases within about a centimetre of the scalp, plump and brownish, may be live. White, clear cases further down the shaft are empty shells from eggs that hatched long ago. They comb out for peace of mind, but they are not a live infestation.
Do I need to treat the whole house?
No. Lice live on heads and die within about a day away from one. Wash bedding, hats, and recently worn clothes in hot water and dry them on heat. Check and treat heads, not rooms. Sprays for furniture are not needed and should never be used on skin or hair.
When can my child go back to school?
Policies vary by school, and many no longer exclude children for nits alone. After the first full comb-out, with live lice removed, most children can return while the schedule continues at home. Check your school's current policy rather than an old rule.
The itching has not stopped. Does that mean it failed?
Not on its own. Itching can linger for days after the lice are gone, and it can also be a reaction to treatments. Judge by the comb and the tissue: live lice or new nits near the scalp mean keep going on the schedule. Itch alone does not.
Canadian Amazon listing record for the Nit Free Terminator comb (November 2026) · School nurse wet combing protocol for head lice · Professional lice service and clinic comparisons read for this guide (November 2026)
The Fix JournalCase 48Family & Friction