Safety Information
AirFeed is safe for pets,
kids, and your family.
Here's exactly what the device produces, what goes on your lawn, and what safe handling looks like — in plain language, not fine print.
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The short answer
AirFeed is a sealed device. The fertilizer it produces is a dilute liquid you apply yourself, where and when you choose. There are no loose granules on the lawn, no open chemicals during operation, and no aerosol spray exposure. Treat AirFeed's output the same way you would treat any liquid lawn or garden fertilizer — keep it stored securely, apply it as directed, and keep pets and children away from freshly treated areas until dry.
How AirFeed is different from bagged fertilizer
No granules sitting on your lawn.
One of the biggest practical safety advantages of AirFeed is the application format. Bagged granular fertilizers work by spreading solid particles across the entire lawn surface, which then sit until they're watered in. During that window, granules are accessible to pets who walk through them, dogs who roll on the lawn, and children who play outside.
Bagged granular fertilizer
Granules spread across the whole lawn and remain on the surface until watered in. Pets can walk through them, ingest residue on paws, or eat grass treated with loose granules. Application windows can last hours or longer depending on rainfall.
AirFeed liquid output
A dilute liquid solution you draw from a sealed reservoir and apply where and when you choose. You control the amount, the location, and the timing. No granules remain on the surface. Once the application has been watered in, the area is safe for normal use.
What AirFeed actually produces
The chemistry, in plain language.
The intended design pathway for AirFeed produces a dilute aqueous solution of nitrogen compounds — primarily ammonia (NH₃) dissolved in water, converted to ammonium (NH₄⁺) and nitrate (NO₃⁻) forms that plants absorb through their roots. These are the same nitrogen forms present in commercial liquid plant fertilizers sold in garden centers today.
The AirFeed Pellet adds phosphorus (from monopotassium phosphate), magnesium (from magnesium sulfate), and trace minerals including iron, zinc, manganese, and boron. These are standard plant nutrition ingredients found in virtually every complete fertilizer formulation on the market.
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Sealed during operation
The fixation process happens inside a closed housing. There is no chemical spray, mist, or airborne exposure during normal device operation.
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Standard plant nutrition inputs
All Pellet ingredients (MKP, MgSO₄, trace minerals) are standard fertilizer components used in mainstream garden products.
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Dilute liquid — not a concentrate
The solution in the reservoir is a dilute fertilizer liquid, not a chemical concentrate. Treat it the same as any bottled liquid lawn food.
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You control application
Unlike granules that cover the whole lawn at once, you draw what you need, apply where you want it, and the rest stays in the sealed reservoir.
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No aerosol or spray during operation
The nitrogen fixation process produces liquid condensation dripping into a reservoir — not sprayed air or airborne chemical.
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No harsh chemical additives
No pesticides, herbicides, or synthetic dyes. The intended inputs are atmospheric air, water vapor, and the Pellet mineral blend.
Safe handling guidelines
The same rules as any liquid plant food.
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Store the device out of reach of children
Keep AirFeed and its reservoir in a location children cannot access unsupervised. The reservoir outlet should remain capped when not in use.
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Keep pets and children off treated areas until dry
After applying AirFeed solution to lawn or garden, keep pets and children away until the liquid has been absorbed or dried — the same recommendation made for all liquid lawn fertilizers.
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Avoid ingestion
Do not allow children or pets to ingest the reservoir solution. While the solution is a dilute fertilizer liquid rather than a household chemical hazard, ingestion of any fertilizer should be avoided.
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Wash hands after handling
Wash hands thoroughly after handling the reservoir, refilling, or replacing the Pellet — the same basic hygiene recommended for all fertilizer products.
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If a pet ingests reservoir liquid
Contact your veterinarian or the ASPCA Animal Poison Control Center (888-426-4435). Bring the product description. The dilute solution is not an acute chemical hazard, but veterinary advice is appropriate for any fertilizer ingestion by pets.
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In case of human exposure concerns
Contact Poison Control (1-800-222-1222 in the U.S.) if a child ingests reservoir liquid or if there is direct eye or skin contact causing irritation. Rinse affected areas with water.
Safety FAQ
Specific questions, direct answers.
Can my dog walk on the lawn after I apply AirFeed solution?▾
Yes — once the applied liquid has been absorbed into the soil or has dried, the lawn is safe for pets. The recommendation is the same as for any liquid plant food: keep pets off the freshly treated area until it dries, then resume normal use. Because you control exactly where and how much you apply (unlike spreading a bag across the whole lawn), you can easily time application around your pet's outdoor schedule.
Is there any chemical smell or off-gassing from the device?▾
Ammonia in high concentrations has a recognizable smell. The AirFeed device is designed to capture ammonia into the reservoir liquid rather than release it into the air — the intended output is a sealed liquid, not an airborne chemical. At the dilute concentrations produced by the device and used for plant feeding, noticeable ammonia off-gassing is not expected during normal operation. The device housing is designed to be weatherproof and enclosed.
Are the Pellet ingredients safe for a yard where children play?▾
The AirFeed Pellet contains monopotassium phosphate (MKP), magnesium sulfate (Epsom salt equivalent), and trace minerals including iron sulfate, zinc sulfate, manganese sulfate, and boron. These are standard fertilizer ingredients used in mainstream consumer garden products. As with all fertilizer components, keep the dry Pellet out of reach of children and pets, and store unused Pellets in a secure location. Once dissolved in the reservoir and applied at intended dilution rates, the trace mineral levels are consistent with normal plant nutrition.
My cat likes to rub on outdoor objects. Is the device housing safe?▾
The outer housing of AirFeed is food-grade polymer (UV-resistant HDPE or polypropylene in the intended design). The external surfaces of the housing do not carry any chemical coating or treatment that would be hazardous to a pet who investigates or rubs against the device. The reservoir is internally sealed and the outlet is capped when not in use.
Is AirFeed safer than conventional bagged fertilizer for a family yard?▾
The primary practical difference is application format. Bagged granular fertilizers leave visible particles on the lawn surface until they're watered in — a window during which pets can walk through granules and ingest residue on paws, or children can contact them during play. AirFeed produces a liquid you apply where and when you choose, with no granules left on the surface. We believe this meaningfully reduces incidental contact risk compared to granular application, though we'll always recommend keeping pets and children away from any freshly treated area until the liquid has been absorbed.
Important: AirFeed is in development. The safety information on this page reflects the intended design and material composition of the device as currently specified. Independent safety testing has not yet been completed, and this page does not constitute a formal Material Safety Data Sheet (MSDS/SDS). A complete safety data package will be published prior to retail sale. This page will be updated as product development progresses. For specific concerns, contact
erm@hvokc.com.
AirFeed is in development. Safety specifications above reflect intended design; independent laboratory safety testing has not yet been completed. This page does not constitute a formal SDS/MSDS. Patent Pending — U.S. Provisional Application No. 64/052,149, filed April 28, 2026. Always follow safe handling guidance for all fertilizer products.