How To Clean a Used Mattress: Step‑by‑Step FAQ Guide

If you’ve just brought home a secondhand bed or are refreshing one that’s been in storage, you’re probably wondering how to clean a used mattress safely and thoroughly. This guide walks through practical steps, common questions, and simple methods to help you feel more confident about sleeping on a previously used mattress.

Why Should I Clean a Used Mattress Before Sleeping on It?

A used mattress may come with dust, skin oils, odors, stains, and general buildup from previous use or storage. Cleaning it:

  • Helps remove surface dirt and debris
  • Reduces musty or unpleasant smells
  • Makes the mattress feel fresher and more comfortable

Deep cleaning a used mattress does not make it “like new,” but it can significantly improve its freshness and appearance.

What Should I Do First When Cleaning a Used Mattress?

1. Inspect the Mattress Carefully

Before anything else:

  • Check all sides for stains, tears, or sagging
  • Look for any signs of insects or droppings
  • Note strong or unusual odors

If you see active insects or heavy contamination, it may be safer to avoid using that mattress at all.

2. Gather Simple Cleaning Supplies

Most people can clean a used mattress with basic household items, such as:

  • A vacuum cleaner with upholstery attachment
  • Mild liquid soap or gentle detergent
  • Baking soda
  • Clean white cloths or sponges
  • A spray bottle with cool or lukewarm water

Avoid soaking the mattress or using harsh chemicals that can damage fabric or foams.

How Do I Vacuum and Surface Clean a Used Mattress?

Vacuuming is the foundation of cleaning a used mattress:

  1. Remove all bedding and wash it in warm water if the care label allows.
  2. Use the upholstery tool on the top, sides, and seams of the mattress.
  3. Move slowly to pick up dust, crumbs, and loose debris.
  4. Flip the mattress (if double‑sided) and vacuum the other side.

This step alone can make a used mattress feel noticeably fresher.

How Can I Remove Odors From a Used Mattress?

Baking soda is a common choice for neutralizing mild odors.

  1. Sprinkle a light, even layer of baking soda over the entire surface.
  2. Let it sit for several hours, or longer if the smell is strong.
  3. Vacuum thoroughly to remove the baking soda.

You can repeat this process if odors linger. Strong, persistent smells that do not improve with cleaning may indicate deep contamination or moisture damage.

How Do I Treat Stains on a Used Mattress?

General Rules for Stain Cleaning

  • Spot clean only – avoid soaking the mattress.
  • Use small amounts of liquid to minimize drying time.
  • Always test a small hidden area first.

Basic Spot-Cleaning Steps

  1. Mix a small amount of mild liquid soap with cool water.
  2. Lightly dampen a clean cloth or sponge (do not saturate).
  3. Gently blot the stain, working from the outside in.
  4. Blot with a dry cloth to remove extra moisture.
  5. Allow the area to air dry completely.

For older or tougher stains, multiple gentle cleanings are often more realistic than expecting them to disappear completely. The goal is usually to lighten and sanitize, not achieve a perfect visual result.

How Do I Make Sure the Mattress Dries Properly?

Drying is a key step in how to clean a used mattress safely:

  • Place the mattress in a well‑ventilated room.
  • Open windows or use a fan to improve airflow.
  • If possible, stand the mattress on its side for better air circulation.
  • Wait until it is completely dry before adding bedding.

Using a mattress that is still damp can trap moisture inside and may lead to odors or fabric damage over time.

Is It Safe to Use Steam or Strong Cleaners?

Many people wonder if they should use steam cleaners or powerful chemicals on a used mattress.

  • Steam cleaners: These introduce moisture and heat, which can be difficult to dry out fully in thick mattresses. This may not be ideal for all materials.
  • Strong chemical cleaners: These can discolor fabrics, break down foams, or leave strong residual smells.

If you do use any specialized cleaning method, follow the manufacturer’s care instructions for your specific mattress type whenever possible, and always prioritize thorough drying.

How Often Should I Clean a Used Mattress After the First Deep Clean?

Once you’ve completed the initial deep clean:

  • Vacuum the surface periodically to keep dust and debris under control.
  • Spot clean fresh spills right away to prevent stains from setting.
  • Air out the mattress by removing bedding occasionally and allowing airflow.

These simple steps help maintain the results of your original cleaning.

✔️ Quick Mattress Takeaways

Key points consumers should understand about How To Clean a Used Mattress

  • Inspect first: Look for insects, heavy damage, or severe odors before deciding to keep the mattress.
  • Start with vacuuming: A slow, thorough vacuum on all surfaces removes loose dust and debris.
  • Use gentle cleaners: Mild soap, water, and baking soda are often enough for basic cleaning and odor control.
  • Spot clean, don’t soak: Apply liquids sparingly and focus on blotting rather than scrubbing hard.
  • Dry completely: Good airflow and patience are essential before putting sheets back on.
  • Manage expectations: Cleaning a used mattress can improve freshness and comfort, but may not erase every stain or smell.

With a careful inspection, simple supplies, and a bit of time, how to clean a used mattress becomes a manageable process that can help you feel more at ease about sleeping on it.