Protecting Pets From Volcanic Ash Fall: The Playbook

Keep pets indoors during ashfall, brush dry ash off before they come inside and then damp-wipe, rinse their eyes and never rub them, cover or bring in food and water, and call your veterinarian if their breathing changes. Volcanic ash is pulverized rock and glass, not a dirtier version of smoke, and that changes how you clean, protect, and feed your pet. This page is the ashfall playbook for pets, drawn from volcano and ashfall authorities and veterinary sources.

If you live in Alaska, Hawaii, the Pacific Northwest, or anywhere downwind of an active volcano, ashfall is a real and recurring hazard. When Mount Spurr showed signs of a possible eruption in 2025, Alaska’s State Veterinarian issued guidance on protecting pets from ash. Treating ash like a smoky day is the dangerous instinct: it is a physically different thing and does its damage differently.

The USGS Volcano Hazards Program describes volcanic ash as “hard, abrasive, mildly corrosive, conducts electricity when wet, and does not dissolve in water”, and says it is not the product of combustion like the soft, fluffy material from burning wood, leaves, or paper. That one fact, abrasive glass that will not dissolve, changes how you clean your pet, how you protect their eyes, and what you do with their food and water.

If your pet is coughing, struggling to breathe, or has a painful, squinting, or visibly scratched eye, call your veterinarian now. Ash is abrasive, and an inhaled or in-eye exposure can injure rather than just irritate. Do not wait to see whether it clears on its own.

If you are pulling gear together, start here:

• Dog boots for wildfire ash and hot debris, for paw protection and boot fit, which carries straight over to volcanic ash
• Indoor enrichment for dogs on smoke days, for burning a stuck-inside dog’s energy without an outdoor exertion you cannot safely allow

Volcanic Ash Is Not Wildfire Smoke

Wildfire smoke is mostly fine particulate and gases that disperse as the air clears. Volcanic ash is ground-up rock and glass that falls, settles, and stays, and it cuts and scratches what it touches. A blowing dust storm is a third thing, arriving as a wall in minutes, which is why it has its own dust storm and haboob pet safety guide.

USGS lists inhalation and respiratory discomfort, eye and skin irritation, abrasion of the teeth, and ingestion leading to gastrointestinal blockages among the effects of ash on animals, along with fluorosis. On the human-health side, USGS lists foreign bodies in eyes and corneal abrasion as ocular impacts, and notes that prolonged exposure to the fine fraction can raise the risk of silicosis, because respirable crystalline silica is one of its components. Your pet’s eyes and airways are not built any tougher than yours.

The parts of the smoke playbook that still apply are keeping pets indoors and watching their breathing. Ash adds a cutting and scratching problem on the eye surface, the paw pads, the coat, and in the airways. Everything below is built around not grinding that grit into your animal.

Step 1: Keep Them In, and Seal the House

The most protective thing you can do is keep pets indoors during the heaviest ashfall. IVHHN’s ashfall guidance is direct: “Keep pets indoors. If pets go out, brush them before letting them indoors.” Alaska’s State Veterinarian, Dr. Sarah Coburn, gives the same advice: stay indoors as much as possible, particularly during the initial ashfall, and keep pets on a leash or under a covered space when they do go out.

Sealing the house protects the pet you just brought inside. Both USGS and IVHHN say to close doors and windows, to place damp towels at door thresholds and other draft sources, and to tape draughty windows. That keeps the fine, respirable fraction from drifting in and settling on the floors your pet walks and licks. If you run a forced-air system that pulls in outside air, shut it down rather than circulate ash through the house.

One more indoor rule: do not dry-sweep ash that gets tracked in. IVHHN warns that dry sweeping puts ash back into the air, where it is easy to breathe. Dampen it first or vacuum it, and keep the pet out of the room.

Step 2: Three Things to Have Before the Ash Falls

A small amount of gear bought ahead of time does real work in an ashfall, and buying it during the event is too late. Three items each answer a specific way ash hurts pets: the water it contaminates, and the paws and eyes it cuts.

Sealed water storage, because ash contaminates open water. IVHHN’s guidance is to keep animals’ food and water clean, and its household water advice is that if ash gets into the supply, you let it settle and use the clear water. An outdoor bowl left out during ashfall collects the same abrasive grit you are keeping out of your animal. Pouring from a sealed reservoir sidesteps that.

Paw protection, because the ground is covered in abrasive glass. Dr. Coburn lists foot booties among the gear worth using for ash. A boot with a real sole and a snug upper keeps grit off the pads and cuts how much a dog tracks in and licks off. The fit and acclimation lessons in our dog boots for wildfire ash guide apply directly, because a boot the dog has never worn is a boot it sheds in the yard.

Saline eyewash for eyes, plus a separate saline rinse for paws and coat, because eyes are where ash does some of its worst cutting. Dr. Coburn’s instruction is to keep saline eyewash on hand and to only rinse, not rub, since the ash is gritty and rubbing drags it across the surface of the eye. Ask your veterinarian which eyewash to keep. The pet saline wound spray below is for paws and coat only; it is not an eyewash.

Step 3: If They Must Go Out, Keep It Brief and Clean Them in the Right Order

Sometimes a bathroom trip is unavoidable. Make it short, keep the dog leashed or supervised so it does not roll or dig in the ash, and then clean it in an order that matters.

Brush or wipe the dry ash off first, before you wet anything. People get this backwards, and the reason is physical. Because ash is abrasive and does not dissolve in water, wetting a coat full of ash does not rinse it away. The water works the ash into a gritty slurry that smears deeper into the skin and pads. IVHHN and Dr. Coburn both say to brush the pet before it comes back inside, so do it dry: brush or wipe the loose ash off the coat, legs, and paws first.

Then damp-wipe to pick up the fine residue. A damp cloth over the coat and paws lifts the fine dust the brushing left, so the pet does not carry it inside to lick off later. Wipe the paws thoroughly, since that is what goes straight into the mouth during grooming.

Check the pads and between the toes. The grit is sharp, so look for small cuts, redness, or embedded debris after any outing on ash, and do not scrub a gritty pad. A cut pad is a question for your veterinarian.

Keep the dog from licking ash off its own feet before you have wiped them, since that is the direct route to the gastrointestinal problems USGS lists among ash effects on animals.

Radiation-emergency guidance also has you brush a pet’s coat before washing it, though the agencies publish that step without the physical explanation IVHHN gives here. Our radiation emergency shelter-in-place guide covers that decontamination sequence, including the step that comes before the pet: cleaning yourself first.

Step 4: Eyes: Rinse, Do Not Rub

Ash in the eye is the exposure most likely to cause an injury you cannot see, because the particles are angular and hard. Dr. Coburn’s instruction is specific: keep saline eyewash available, and only rinse, not rub. Rubbing, whether you do it or the pet paws at its own face, drags grit across the cornea, which is the corneal abrasion USGS names as an ash injury. Keep the pet from pawing at its face.

If the eye stays painful, if the pet squints or holds it shut, or if you can see a scratch or cloudiness, that is a same-day veterinary visit. A scratched cornea is not something to manage at home. Your veterinarian can tell you how to flush a pet’s eyes safely, and what to do after.

Step 5: The Food and Water Contamination Rule

Ash settles on everything left out, including bowls, and swallowing it is its own hazard. IVHHN’s guidance is to keep animals’ food and water clean and, for household water, to let ash settle and then use the clear water. Alaska’s State Veterinarian recommends cleaning water dishes regularly and covering or storing feed. The same applies to your pet’s bowls.

The practical version:

• Bring food and water bowls inside before and during ashfall, or cover them. An open bowl on the porch is an ash collector.
• Pour from sealed, stored water rather than refilling from a bowl or a source that has been collecting fallout.
• Keep food sealed and indoors. Ash on food is abrasive grit going into the digestive tract.
• Honor any Do Not Drink notice for your pets too. If your area’s water supply is flagged during or after an eruption, use stored or bottled water for animals until the notice lifts, the same as for people.

During an ashfall, the difference between a clean bowl and a contaminated one is whether the water came from something with a lid on it.

Step 6: The Respiratory Watch

Even indoors and cleaned up, keep an eye on breathing, because inhaled ash is abrasive and can irritate the airways as it settles there. The AVMA’s list of smoke-and-particulate signs to watch for in pets covers ash exposure well: coughing or gagging, difficulty breathing including open-mouth breathing and increased noise when breathing, eye irritation and excessive watering, nasal discharge, and fatigue or weakness.

The AVMA’s rule on what to do is short: “If any of your animals are experiencing any of these signs, consult your veterinarian.” It also says animals with cardiovascular or respiratory disease are especially at risk from smoke and should be watched closely whenever air quality is poor. A pet with an existing heart or lung condition, a senior, or a flat-faced breed that already works to breathe deserves a lower threshold to call. Treat ash inhalation as a vet call, not a wait-and-see.

What About Masks and Goggles?

It is tempting to reach for a pet respirator or goggles when the sky is falling, but the state veterinarian’s caution is worth heeding. Dr. Coburn advises against goggles, masks, or ear protection on pets that have not been trained to wear them, noting the unintended consequences of trying something drastically different on an already-stressed animal. A mask a panting dog fights, or a goggle it claws at, can cause more trouble than the brief exposure you were trying to prevent.

The gear she does endorse for ash is pet jackets and foot booties, plus the saline eyewash. The ceiling on pet respiratory masks generally is covered in our review of whether dog smoke masks actually work: a seal a panting dog breaks is not the protection the packaging implies. For ash, the more reliable move is keeping the pet indoors during the heaviest fall and limiting outdoor time to brief, supervised trips.

Ashfall Pet Checklist

• Keep pets indoors during the heaviest ashfall; limit outings to brief, leashed, supervised bathroom trips.
• Seal the house: close doors and windows, damp towels at thresholds, tape draughty windows, shut down systems that pull in outside air.
• After any outing, brush or wipe dry ash off first, then damp-wipe the coat and paws. Never wet a heavy ash coat before brushing it out.
• Check paw pads and between the toes for cuts; call your vet about a cut pad.
• Rinse ash from eyes with saline eyewash. Only rinse, never rub. Painful or squinting eye equals a same-day vet visit.
• Bring in or cover food and water bowls; pour from sealed stored water; honor any Do Not Drink notice for pets too.
• Watch breathing. Coughing, labored or noisy breathing, watering eyes, or nasal discharge means consult your veterinarian, sooner for pets with heart or lung conditions.
• Do not dry-sweep tracked-in ash near pets; dampen or vacuum, and keep the pet out of the room.

Where This Fits in Your Plan

Volcanic ash is its own hazard, but it overlaps with gear and habits you may already have. The paw-protection and boot-acclimation work in our dog boots for wildfire ash and hot debris guide applies almost unchanged, since both hazards put abrasive material under your dog’s feet. When ash keeps a dog stuck inside for days, indoor enrichment for smoke days covers how to burn that pent-up energy without outdoor exertion. And before you buy any pet respirator on the strength of an eruption headline, read our honest look at dog smoke masks.

The best time to sort out sealed water, sized booties, and an eyewash is an ordinary week, not while the ash is already falling. If you live downwind of a volcano, treat this the way coastal households treat hurricane season: the plan only protects you if it is in place before you need it.