The washing machine gets treated like the answer to almost every laundry-adjacent problem in the house, from muddy soccer cleats to that weird smell coming from the dog bed. And most of the time, that instinct is fine. But there’s a real list of items that either come out ruined, ruin the machine itself, or in a few cases create an actual fire hazard once they hit the dryer afterward.
A little sorting before laundry day saves your machine’s lifespan, your favorite clothes, and in some cases, prevents a genuinely dangerous situation. Here’s what needs to stay out of the drum.
Bras With Underwire
The agitation of a washing machine cycle can bend or snap underwire, and once it’s bent, it tends to poke through the fabric in an uncomfortable way that ruins the bra entirely. Underwire can also work its way out of a garment and get lodged in the machine’s drum or drain, causing damage that’s expensive to repair. Hand washing or using a mesh lingerie bag on a gentle cycle protects both the bra and the machine.
Memory Foam Pillows and Bath Mats
Memory foam absorbs water rather than letting it pass through, which means it becomes extremely heavy when wet and can throw a washing machine off balance during the spin cycle. The foam can also break down and deteriorate with repeated washing, shedding small pieces that clog the drain pump. Spot cleaning or hand washing memory foam items, then air drying them fully, is a safer approach.
Anything With Grease or Oil Stains
Clothing or rags with grease, cooking oil, or motor oil stains can retain flammable residue even after a wash cycle, and that residue becomes a genuine fire risk when those items go into a hot dryer afterward. Fire safety officials have specifically warned that oil-soaked fabric can spontaneously combust from residual heat, even after laundering. Wash oil-stained items separately with a heavy-duty detergent, and air dry them rather than using a dryer, checking carefully that the oil smell is fully gone first.
Swimsuits With Rubber or Elastic Components
Chlorine already breaks down the elastic fibers in swimwear over time, and machine agitation combined with hot water accelerates that breakdown even further, leading to a swimsuit that loses its shape and stretch far faster than it should. Rinsing swimsuits by hand in cool water after each wear extends their life considerably compared to regular machine washing.
Down Comforters Too Large for a Home Machine
A queen or king-size down comforter often exceeds the reasonable capacity of a standard home washing machine, and forcing an oversized, heavy item through a cycle it can’t properly handle can throw the machine off balance or leave the comforter incompletely rinsed and still soapy. Large down bedding is generally better suited to a commercial-sized machine at a laundromat, which can handle both the bulk and the weight safely.
Rugs With Rubber Backing
Machine washing can cause rubber-backed rugs to crack, peel, or disintegrate, since the backing material isn’t designed for the heat and agitation of a wash cycle. Small bits of degraded rubber backing can also clog the machine’s drain. Rugs with rubber backing are better cleaned with a vacuum, spot treatment, or a professional cleaning rather than a full machine wash.
Shoes With Embellishments or Delicate Materials
Canvas sneakers can sometimes survive a gentle cycle in a mesh bag, but shoes with glued embellishments, suede panels, or delicate fabric can fall apart entirely in a washing machine. The heat and agitation can also warp shoe shapes permanently. Stick to hand cleaning for anything beyond basic canvas sneakers, and always check the shoe’s care instructions first.
Curtains With Metal Hooks or Rings Still Attached
Leaving metal curtain hooks, rings, or grommets attached during a wash cycle risks scratching the drum, tangling with other items, or breaking off and getting lodged somewhere in the machine. Removing all hardware before washing, and using a gentle cycle for lightweight curtain fabric, prevents both fabric damage and machine wear.
Anything With Loose Sequins or Beading
Embellished clothing with sequins, beads, or decorative appliques often doesn’t survive machine agitation intact, and the loose decorations that come off can scratch other clothing or get stuck in the machine’s mechanisms. These pieces are almost always better hand washed or taken to a dry cleaner that can handle delicate embellishments properly.
Waterproof and Breathable Outdoor Gear
Rain jackets and other gear with a waterproof, breathable membrane can have that coating damaged by standard detergent, which often contains additives that break down the technical fabric’s water resistance over time. These items typically need a specialized technical fabric cleaner and a gentle, cold cycle to preserve their performance, rather than regular detergent and a standard wash setting.
Reusable Bags With Insulated or Plastic Lining
Insulated grocery totes and cooler bags often have a foam or plastic lining that doesn’t hold up well to machine washing, since the agitation and heat can cause the lining to crack, peel, or separate from the outer fabric. Wiping these down by hand with a damp cloth keeps the insulation intact far longer than tossing them in with a load of laundry.
Pet Bedding Stuffed With Foam
Foam-stuffed pet beds behave similarly to memory foam pillows in a washing machine, absorbing water and becoming heavy enough to unbalance the machine, while also breaking down with repeated cycles. Removable, machine-washable covers are a better long-term solution than trying to wash a foam-filled bed as a single unit, since the cover can be laundered regularly while the foam insert stays dry and intact.
Delicate Lace and Silk Without Protection
Lace trim and silk fabric can snag, stretch, or tear during a standard wash cycle, since the fibers are more fragile than everyday cotton or synthetic blends. Even on a delicate cycle, these fabrics benefit from being placed in a mesh laundry bag to prevent snagging on zippers or other garments, and cold water with a gentle detergent helps preserve both the fabric and any decorative trim.
