A standard washing machine with regular laundry detergent will remove poison ivy’s irritating oil from clothes. The key is handling the contaminated clothing carefully before it goes in the wash, because the oil (called urushiol) can trigger a rash on any skin it touches, and it stays active on fabric for a surprisingly long time.
Why Speed Matters
Urushiol is a sticky, invisible oil that bonds to fabric fibers on contact. Unlike dirt or mud, it doesn’t break down on its own. According to Des Moines University Clinic, urushiol can remain allergenic on clothing for up to 10 years. You could stuff contaminated jeans in a drawer, pull them out years later, and still get a blistering rash. The sooner you wash exposed clothes, the less chance you have of accidentally spreading the oil to your skin, furniture, car seats, or other surfaces.
How to Handle Clothes Before Washing
Before you toss anything in the machine, put on vinyl or cotton gloves. This is one detail people often get wrong: thin rubber or latex gloves do not protect you, because urushiol can penetrate rubber. Vinyl gloves or heavy-duty cotton work gloves are the safe choice.
While wearing gloves, carefully remove the contaminated clothing and avoid brushing it against your face, arms, or any exposed skin. If you carried the clothes in a bag or hamper, wipe that down afterward with a damp cloth and soapy water. Wash everything that had contact with the plant or with a person who touched the plant, including jackets, socks, and hats.
Washing Machine Settings and Detergent
Use the hottest water setting your fabric can tolerate and your regular laundry detergent. Urushiol is an oil, and detergent’s entire job is breaking apart and suspending oils in water so they rinse away. You don’t need a specialty product. Hot water helps the detergent work more effectively, but even warm water with a full dose of detergent will get the job done.
Run a full wash cycle rather than a quick or express cycle to give the detergent enough contact time. If you’re dealing with heavily contaminated work clothes, running them through a second wash cycle provides extra insurance.
Can You Wash Other Clothes in the Same Load?
Yes. The American Cleaning Institute confirms that urushiol becomes suspended in the wash water and won’t transfer to other items in the same load. So you don’t need to run the contaminated clothes through a separate, isolated cycle. You also don’t need to run an empty cleaning cycle on the machine afterward. Once the wash and rinse are complete, the urushiol is gone.
Cleaning Shoes, Boots, and Non-Washable Items
Shoes and leather boots can’t go in a washing machine, but they still need to be cleaned. Urushiol clings to laces, insoles, and the inside of the tongue just as easily as it does to fabric.
Put on heavy protective gloves first. Then unlace each shoe and pull the tongue out as far as it goes. Remove the insole if it comes out. Mix about 2 cups of hot water with 2 tablespoons of liquid laundry detergent, then scrub every surface, inside and out, with a soft-bristle brush dipped in the solution. You want thorough coverage, but avoid soaking leather. Wipe all surfaces down with a clean, water-dampened cloth to rinse, then let everything air dry completely before reassembling.
For garden tools, backpacks, and gear with hard surfaces, the same approach works: soapy water, a scrub brush, and a thorough rinse. Wear your vinyl or cotton gloves the entire time.
Dry Cleaning as an Alternative
If a contaminated garment is dry-clean only, professional dry cleaning will remove urushiol effectively. The chemical solvents used in dry cleaning are designed to strip oils from fabric without water, and they handle urushiol well. Just make sure to tell the dry cleaner that the clothing has been exposed to poison ivy so their staff can take precautions when handling it.
What About the Dryer?
Once clothes have been through a complete wash cycle with detergent, the urushiol is gone and you can dry them normally. There’s no need to air dry as a safety measure. If you’re uncertain whether a wash was thorough enough (maybe you used cold water and a short cycle), run the clothes through a second wash before drying rather than hoping the heat of the dryer will help. Heat alone doesn’t neutralize urushiol. Detergent and water do the actual work.