Dry-cleaning solvent: what it removes and how to use it safely

Step by step

1. 1

   Read the label and set up outdoors or by a window

   Check whether the product is flammable and what it contains. Work outside or in a well-ventilated room with the fumes blowing away from you. Turn off pilot lights and keep away from flames, cigarettes and sparks from fans, vacuums or refrigerators.

   Why: The vapors are toxic, many solvents are flammable, and even nonflammable chlorinated solvents break down into extremely toxic vapors in a flame.

2. 2

   Test on a hidden area

   Dab a little solvent on an inside seam or hidden spot and let it dry.

   Why: Solvents can change some dyes and damage some modacrylics, vinyl and leather finishes.

3. 3

   Lay the stain face down on paper towels

   Put a pad of white paper towels under the stain, stained side down.

   Why: Working from the back pushes the dissolved oil out of the fabric and into the towels, rather than deeper in.

4. 4

   Apply a small amount to the back

   Wet a white cloth or pad with solvent and dab the back of the stain. Never pour solvent into a bowl or onto the fabric.

   Why: Small amounts dissolve the oil while limiting vapor, fire risk and rings.

5. 5

   Change the towels often

   Move to a clean part of the towel whenever the stain transfers, and repeat until nothing more comes out.

   Why: A towel full of dissolved grease puts it straight back into the fabric.

6. 6

   Let the solvent evaporate completely

   Leave the item outdoors or by an open window until it no longer smells of solvent.

   Why: Extension guides say never to put solvent-damp items in a washer or dryer, and many solvents are flammable.

7. 7

   Rinse and wash

   Rinse, then wash washable items in the hottest water the label allows with a heavy-duty detergent. Check the spot before drying.

   Why: The solvent loosens the oil and the detergent carries away the rest, including any dye or residue the stain left.

What dry-cleaning solvent is and how it works

Consumer dry-cleaning fluids and spot removers are organic solvents, not water. They have contained petroleum distillates (naphtha and other hydrocarbons) and, historically, chlorinated solvents such as perchloroethylene, trichloroethane and trichloroethylene. The Kentucky extension guide notes the chlorinated ones were being phased out, and EPA's 2024 rule bans perchloroethylene in consumer products, with retail sales prohibited after March 8, 2027. If you have an old bottle, read the label.

They work because like dissolves like. Grease, oil, wax, tar and resin don't mix with water, but they dissolve readily in an oily solvent, which then carries them into an absorbent pad. Laundry pretreatment aerosols contain petroleum solvent for the same reason. The solvent usually isn't the last step: a detergent wash removes what's left.

What dry-cleaning solvent is good for

• Heavy grease and oil, tar, tree sap and pine resin: the American Cleaning Institute's method is to work from the back onto paper towels, let it dry, rinse and wash hot. See grease stains.
• Candle wax and crayon residue after scraping: solvent, then heavy-duty detergent. See wax on clothes.
• Ink, lipstick, eye makeup and shoe polish, which the Kentucky guide groups with other oily stains that need a solvent first.
• Gum and adhesives: harden with ice, scrape, then use cleaning fluid or a prewash aerosol. See gum on clothes.
• Dry-clean-only fabrics: New Mexico State University says to use only a dry-cleaning agent on them, or ask a dry cleaner.
• Carpet: the Carpet and Rug Institute uses a solvent step for gum, wax, crayon, grease and chocolate, applied to a cloth and never poured.

An older extension recipe for a dry spotter mixes 1 part coconut or mineral oil with 8 parts dry-cleaning solvent.

What dry-cleaning solvent damages, and what to keep it away from

• Carpet backing: poured solvent can reach the backing and dissolve the latex that holds the layers together.
• Vinyl: solvents can pull out the plasticizers that keep vinyl flexible, leaving it stiff.
• Leather and suede: they can disturb the finish and leave light spots. Test, or leave it to a professional.
• Some modacrylics: some solvents damage them.
• Your washer and dryer: never add solvent to a washing machine, and never put a solvent-damp item in a dryer.

Don't follow solvent with water-based removers or bleach while it's still wet. The Kentucky guide says to let the solvent evaporate and rinse removers out between steps to avoid unwanted reactions. The general rule on which cleaning chemicals never to mix applies too.

By situation

Grease or oil on washable clothes

Absorb what you can, treat from the back with solvent onto paper towels, let it evaporate, then wash hot with heavy-duty detergent. Check before drying.

Dry-clean-only garments

Solvent is the only home treatment to use on these, and only as a small spot test first. For valuable items, take them to a dry cleaner and say what the stain is.

Carpet

Put the solvent on a white cloth and blot. Never pour it on, or it can reach the backing and loosen it.

Gum, wax and crayon

Harden gum with ice and scrape off as much wax or crayon as you can first. The solvent is for the thin film left in the fibers, not the bulk.

Vinyl, leather and suede

Avoid solvents on these, or test in a hidden spot first. They can stiffen vinyl and leave light spots on leather and suede finishes.

Solvent spilled on clothes you're wearing

Change right away and hang the garment outside until the solvent has evaporated. Wash any skin it touched.

What not to do

• Don't use solvent near a flame, pilot light, cigarette or electric spark. Many solvents are flammable, and nonflammable chlorinated ones break down into extremely toxic vapors in a flame.
• Don't put solvent in the washer or a solvent-damp item in the dryer. Many solvents are flammable, and extension guides say to let the solvent evaporate fully before any machine.
• Don't pour it onto carpet or upholstery. It can soak through and dissolve the latex that holds carpet backing together.
• Don't use it in a closed room. The vapors are toxic. Work outdoors or with the fumes blowing away from you.
• Don't assume nonflammable means safe. Chlorinated solvents are toxic themselves, and EPA links perchloroethylene to kidney, liver, immune, neurological and reproductive harm and to cancer.

Other methods that work

Laundry pretreatment spray

For washable clothes, a laundry pretreatment aerosol contains petroleum solvent and detergent together and is used the same way, from the back.

Caution: It is still flammable. Use it in a ventilated room.

Dish soap

For light grease on washable fabric, liquid dish soap emulsifies the oil without solvent fumes.

Caution: Rinse it out thoroughly before washing.

A professional dry cleaner

For dry-clean-only, valuable or large items, a cleaner has the right solvents and ventilation.

Caution: Tell them what the stain is and anything you've already tried.

Stain still there?

A ring formed around the spot

Too much solvent spread the dissolved oil outward. Work from the back again with less solvent on the cloth, and change the towels often.

The stain faded but a mark remains

The solvent removed the oil, but some stains also leave color or residue. Wash with a heavy-duty detergent in the hottest safe water.

The garment still smells of solvent

It hasn't fully evaporated. Hang it outdoors longer before washing or drying.

Safety

• Dry-cleaning solvents are poisonous and often flammable. Use small amounts outdoors or in a well-ventilated room.
• Keep away from flames, pilot lights, cigarettes and electrical sparks.
• Keep children and pets out of the room, and store the product tightly capped in an unbreakable container away from heat.
• Keep it off your skin; wash any area it touches.

Never mix cleaning products; see chemicals you must never combine.

Questions

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