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Desk

How to Clean a Keyboard Without Taking It Apart

To clean a keyboard without taking it apart, turn it off or unplug it, tip it upside down and tap out the loose crumbs, brush between the keys at an angle, then wipe the keycaps with a cloth that is only barely damp. That handles most of what builds up in daily use: crumbs, dust, hair, and the shiny film on the most-used keys. You do not need to pop off the keycaps, and on many laptops you should not.

What you need

A small, soft crevice brush that fits between keys. The Desk and Keyboard Crevice Set is meant for picking dust out of keyboards, monitor stands, and desk seams.
A lint-free cloth for wiping. A cloth from the Microfiber Cleaning Cloth Set works well.
Isopropyl alcohol, usually 70 percent from a pharmacy, or plain water. It goes on the cloth, never on the keyboard.
Optional: a can of compressed air.

Step by step

Turn it off. Shut down a laptop and unplug the charger. Unplug a wired keyboard, or switch off a wireless one and take the batteries out if that is easy. You do not want stray keypresses or power running while you work.

Tip and tap. Hold a separate keyboard upside down over a trash can or a sheet of paper and tap the back gently. For a laptop, open it as wide as it safely goes and tilt it, supporting the base, rather than shaking it hard.

Brush between the rows. Sweep the brush along the gaps between keys, working from the top row toward you, so debris is pushed out the front edge instead of deeper inside. Angle the bristles slightly under the edge of each keycap.

Use air if you have it. Hold the can upright and use short bursts at an angle. Long blasts or tilting the can can spray cold liquid propellant.

Wipe the keycaps. Dampen one corner of the cloth with a little alcohol or water, wring it until it is almost dry, and wipe each key and the frame around them. Let everything air-dry for several minutes before switching back on.

Finish the desk. While the brush is out, run it along the base of the monitor stand, the seam at the back of the desk, and the edges of the mouse.

What to avoid

Spraying any liquid directly onto a keyboard, or using dripping wet wipes. Liquid running under the keys is the most common way people damage a keyboard while cleaning it.
Bleach, glass cleaner, and abrasive powders, which can wear off key lettering and coatings.
Prying off laptop keycaps unless the manufacturer explains how. Many of the clips underneath are fragile and hard to replace.
Pressing a hard vacuum nozzle against the keys, which can catch and pull keycaps.
Blasting compressed air into a laptop fan vent so the fan spins freely. If vents are clogged, follow the manufacturer's guidance or ask a repair shop.

How to tell it worked, and when to stop

Keys that felt gritty or sluggish should press evenly again, the keycaps should look matte rather than greasy, and the brush should come out of the gaps clean. If one key is still sticky or does not register, the cause is often spill residue or a worn switch under the cap, not dust you can reach from above.

If you spill something, turn the device off right away, unplug it, tip it so liquid can drain out, and do not turn it back on until you have checked the manufacturer's guidance or talked to a repair shop. Sugary drinks and coffee usually need a proper internal clean. A laptop still under warranty is better taken to an authorized service than opened at home.

How often

A quick brush once a week if you eat at your desk, and a wipe-down every few weeks, keeps buildup from getting stuck under the keys. Shared keyboards at work or on a family computer are worth wiping more often. Keep the brush in a desk drawer rather than with the rest of your cleaning supplies, so it actually gets used.