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Lime and Dust Safety

Agricultural lime looks harmless, but fine dust can irritate eyes, skin and airways, and spreading it is often a windy, dusty job. This guide covers the hazard and general prevention, and points you to official sources for specifics.

Is lime really a hazard?

Agricultural lime and similar soil products are common and useful, yet fine dust from them can irritate the eyes, the skin and the breathing passages. Some products are more reactive than others, so the label and the safety data sheet matter.

Many farm jobs also create other kinds of dust, from grain and feed to soil and bedding. The same habits help with most of them, and a person who already has asthma or another lung condition has extra reason to take care.

• Dust can irritate eyes, skin, nose and throat.
• Products differ, so read the label and safety data sheet.
• People with breathing problems should talk to a doctor about the work they do.

When is dust exposure most likely?

Exposure tends to happen while loading, moving and spreading product, when bags are opened or emptied, and when wind carries dust back over the operator. Cleanup with a broom or an air hose can raise more dust than the original job.

Think through the job step by step and ask where the dust is made and where it travels. That simple habit shows you where to change the work, rather than only changing what you wear.

Keep a note of which jobs make the most dust on your farm, and revisit them each season to see whether any can be done differently.

How can the work be planned to reduce dust?

Planning comes first. Pick a day and a time when wind will carry dust away from people, buildings, roads and neighbors, and avoid working in conditions that blow it back at you. The National Weather Service forecast is a good place to check conditions.

Where you can, handle product in a way that keeps it from being thrown into the air. Move slowly, avoid dropping material from a height, and keep loading areas tidy so that spilled product is not ground into fine dust under tires.

• Check the wind before you start and stop if it changes.
• Keep bystanders and children well away from the work.
• Avoid dry sweeping and compressed air for cleanup unless a qualified person says it is acceptable.

What protective gear should I use?

The right protective equipment for eyes, skin and breathing depends on the product and the task, and it must fit properly to work. This site does not list ratings or specifications, because the label, the safety data sheet and OSHA guidance are the places to look.

If a respirator is needed, your employer or your supplier should point you to the written requirements, and the person who wears it needs to be shown how to use it correctly. Ask your extension office or an occupational health provider where to get that instruction.

What about cabs, buildings and equipment?

Enclosed cabs can help, but only if doors and windows stay closed and the filtration is in good order as the manufacturer describes. An open window defeats the purpose.

Storage buildings and loading areas should have good housekeeping and a plan for removing dust that settles. Equipment that wears out or leaks product adds to the problem, so repair it when the problem first shows up.

What should I do after an exposure?

If eyes, skin or breathing are bothered, stop the job and move to clean air. Follow the guidance on the safety data sheet and call a doctor or your local poison control service if symptoms continue or you are unsure. In a medical emergency, call 911.

Tell your doctor what product you were handling and bring the label if you can. Make a note of what happened so that you can change the job before the next time.

How do I protect family members and neighbors?

Dust travels, so the people near the work matter too. Tell household members when you plan to spread or move product, keep windows closed on that side of the house, and keep laundry off the line that day.

Wash work clothes separately from family laundry and shower after the job. If a neighbor has asthma or another breathing condition, a quick phone call beforehand is a kind gesture and often prevents a problem.

• Warn family and neighbors before dusty work.
• Launder work clothes separately.
• Wash up before touching food, children or pets.

Last reviewed: November 12, 2026. Written by the Farm Safety Editorial Team. See our editorial policy.