Home Remedy for Termite Control: What Works and What Not

You found something. Maybe a small pile of pellets near a window frame. Maybe a mud tube along the foundation. Maybe wings on the bathroom floor after a warm February morning. Now you want to know if there is anything you can do before calling a pest control company.

That instinct makes sense. Some home remedies do kill individual termites in specific, accessible situations. None of them eliminate a colony. Which ones are worth trying depends almost entirely on which termite species you have, and that is the one thing no other guide tells you before listing the remedies.

Start there before you try anything.

Start here: which termite species are you dealing with?

Los Angeles has two main termite species. They live in completely different places, and a home remedy that has some effect on one has zero effect on the other. Trying a drywood termite remedy on a subterranean infestation accomplishes nothing, and weeks of wasted effort while the colony keeps feeding is the result.

Here is how to read the signs you found:

If you found mud tubes anywhere on your property, stop reading the home remedy section and skip to the escalation framework below. No home remedy penetrates soil. The subterranean colony is underground, sometimes 20 to 70 feet down, and every method in this guide works only on termites it physically contacts.

For a full breakdown of how to identify which species you have, see our termite inspection guide and our pages on drywood termites in Los Angeles and subterranean termites in Los Angeles.

Home remedies that have real (limited) effect

These methods kill individual termites they physically contact. They do not eliminate colonies. They are appropriate only for a very early-stage, fully accessible, single-location drywood infestation, or as a temporary measure while you arrange a professional inspection.

Borax (boric acid)

Borax, also known as sodium borate, kills termites that ingest it by disrupting their digestive and nervous systems. It works on both drywood and subterranean termites, but only if they directly consume it.

Apply it as a powder dusted onto accessible infested wood, or dissolved in water as a spray. Reapply every two to three days for at least a week. Wear gloves and a mask during application. Boric acid irritates skin and lung tissue and should be kept away from children and pets.

The thing borax cannot do is spread. Unlike professional-grade termiticides such as fipronil (Termidor), borax has no transfer effect. It does not move through the colony via grooming or feeding contact. Every termite that does not directly ingest it is unaffected. The queen, deep in the colony, is never reached.

Diatomaceous earth

Food-grade diatomaceous earth works by physical means rather than chemical ones. On a microscopic level, it is made of tiny sharp-edged cylinders that cut through a termite’s waxy outer shell. The termite loses moisture and dehydrates within 24 to 48 hours.

Apply a thin layer in cracks, crevices, and along baseboards where you have confirmed termite activity. Wear a mask, because inhaled diatomaceous earth causes lung irritation. Outside, apply a 2-inch layer around foundation entry points.

It only affects termites that physically cross the treated surface. As a surface treatment in visible, accessible areas, it works. As a colony control method, it does not. It cannot penetrate enclosed wood, wall voids, or soil.

Orange oil (d-limonene)

Orange oil contains d-limonene, which dissolves the waxy protective coating on a termite’s exoskeleton on direct contact. One UC Berkeley study found 68 to 96% mortality in directly injected termite galleries.

That number sounds high. It applies only to termites inside the specific gallery you can access, drill, and inject. A drywood termite colony spreads through multiple rafter bays, wall cavities, and framing members, most of which a homeowner cannot reach without specialized inspection equipment. The effective kill rate across the full colony is significantly lower than 68 to 96% in any real-world infestation.

Orange oil is worth attempting if you have a confirmed, accessible, isolated drywood gallery: one exposed rafter section or a piece of furniture. Drill small holes at infested points, inject the oil with a syringe, and seal. Repeat for any gallery openings you can reach.

For Los Angeles homeowners: orange oil does not work on subterranean termites. It does not penetrate soil. If you have mud tubes, orange oil is the wrong product.

Our inspectors use radar and camera-guided technology to map the full extent of drywood infestations without speculative drilling. Orange oil treatments applied after a proper scan are far more effective than homeowner-applied orange oil with no map of where the colony actually is.

Neem oil

Neem oil comes from the seeds of the neem plant. When termites ingest it, it disrupts their molting cycle and reproductive system. Applied to wood surfaces where termite activity is confirmed, it provides a mild deterrent.

It will not kill termites on contact reliably, reach enclosed areas, or eliminate a colony. It is a surface treatment that slows local feeding, not a control method for an active infestation.

Wet Cardboard Trap

Corrugated cardboard contains cellulose, which is what termites eat. Wet cardboard combines moisture and cellulose, making it an attractive target for foraging drywood termites.

Place damp cardboard near areas of suspected activity and leave it for two to three days. When you see termites clustering on it, remove it outside immediately and burn or seal it in a bag.

This method works better as a diagnostic tool than a control method. It tells you where termite activity is concentrated. Use that information to direct treatment or to inform your pest control inspector.

Soapy Water and White Vinegar

Both kill individual termites on contact. Soapy water seals around a termite’s skin, blocking the pores through which it breathes. Vinegar kills on direct contact through its acidity.

Mix six tablespoons of dish soap with eight cups of water in a spray bottle. For vinegar, use it straight or diluted 1:1 with water.

These methods kill the termite in front of you. For every one you kill this way, hundreds or thousands more are inside the wall or underground. They have no meaningful effect on an infestation and no residual protection. Use them to address the few termites you can see, not as a control strategy.

What does not work, and why people keep recommending it

Ammonia kills termites it contacts but cannot reach the colony. The fumes are hazardous indoors. Not worth attempting.

Essential oil diffusers and sprays (clove, garlic, lavender) may mildly deter individual termites at treated surfaces. They have no effect on established colonies. Termites route through wood pathways you cannot see or treat with surface sprays.

Sunlight exposure is occasionally useful for a single infested piece of furniture: a chair, a table left in direct sun for several hours may kill some termites inside it. It is useless for any infestation inside your home’s walls or framing.

Nematodes are parasitic roundworms sold as an eco-friendly termite control option. In theory, they enter and kill termites. In Los Angeles, the soil temperature, moisture levels, and clay-heavy composition during dry summer months make survival conditions very difficult to maintain. Failure rates in Southern California are high enough that nematodes are not a reliable primary or supplemental approach for an active infestation.

Flooding underground nests does not work. Subterranean termite colonies in Los Angeles can be 20 to 70 feet deep with tunnel networks spanning hundreds of feet. Flooding a small area from a garden hose does not reach the colony or the queen.

Prevention: the home action that actually has lasting impact

You cannot eliminate an active infestation through prevention. But prevention is the one area where home action has a genuine, lasting effect on termite risk in Los Angeles. Inspectors across the city see the same contributing conditions on every property they visit.

Fix moisture sources first. Wet soil under your foundation is the primary attractant for subterranean termites. In Pasadena, Glendale, Burbank, and Alhambra, aging irrigation lines and older plumbing create slow leaks that saturate foundation soil for months without anyone noticing. Fix irrigation leaks and plumbing drips as soon as they appear.

Eliminate wood-to-soil contact. Firewood stacked against the house, wooden fence posts in direct soil contact, wood garden beds against the foundation: these are direct termite entry points. Move firewood at least 20 feet from the structure. Replace wood posts with metal post bases where possible.

Pull mulch back from the foundation. Keep mulch at least 6 inches from the foundation and siding. Mulch retains moisture and provides cellulose. Both attract termites.

Address roof and attic moisture. Drywood termites infest wood with elevated moisture content. A slow roof leak or poor attic ventilation raises the moisture level in your rafters above the threshold drywood termites prefer. Fix leaks and check attic ventilation, particularly in pre-1950 homes in Highland Park, Eagle Rock, and South Pasadena.

Seal foundation cracks and utility penetrations. Subterranean termites enter slab homes through expansion joints, utility pipe gaps, and foundation cracks. Sealing these points removes access routes.

Schedule annual inspections. Early-stage infestations cost far less to treat than advanced ones, and licensed inspectors in Los Angeles offer free inspections. The inspection tells you what you are dealing with before the colony has months more to expand.

See our termite inspection guide for what to expect from a professional inspection and what the report means.

How to know if a home remedy is working or failing

Signs the situation may be stable (only for a very small, early-stage, accessible infestation):

• No new frass deposits in the treated area after two to three weeks
• A mud tube you broke remains broken after 48 hours
• No new hollow-sounding areas when you tap surrounding wood

Signs the home remedy is not working:

• New frass deposits appear after one to two weeks of treatment
• A broken mud tube is repaired within 48 hours (active subterranean colony, not reachable by any home remedy)
• New swarmers appear inside the home
• Soft or hollow-sounding wood has spread to new areas
• You cannot locate the infestation visually. If you cannot see it, you cannot treat it.

When to stop DIY and call a professional

Home remedies are appropriate only when all of the following are true:

• The infestation was discovered within the last few weeks, not months
• Only one small, fully accessible wood member is affected
• No mud tubes are present anywhere on the property
• No frass or hollow-sounding wood in multiple locations

Call a licensed inspector immediately if any of these apply:

• Mud tubes are present anywhere on the property
• Multiple areas show frass deposits or hollow-sounding wood
• You do not know how long the infestation has been active
• A prior home remedy attempt has not stopped new frass production after three to four weeks
• Your WDO inspection report shows Section 1 findings
• You are buying or selling and need Section 1 clearance for escrow

Professional termite inspections in Los Angeles are free and take less than an hour. The inspection identifies the species, the location, and the extent of the infestation: the three things you need before any treatment decision, DIY or professional. There is no downside to getting one before continuing to try home remedies.

For a full comparison of professional treatment options and costs, see our termite treatment cost guide and our guide on types of termite treatments.

Frequently asked questions about home remedies for termite control

Schedule your free termite inspection

The most useful first step, before any home remedy, is knowing exactly which species you have and how far the infestation has spread. My Termite Company inspectors use radar and camera technology to map infestations without drilling into your walls, and the inspection is free across Los Angeles and all surrounding cities.

Schedule your free termite inspection in Los Angeles

Buying or selling and need a formal WDO report with Section 1 clearance for escrow? See our real estate termite inspection service.