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Metal vs Plastic Straws

Metal or plastic: which reusable straw is better?

Plastic has one advantage worth stating plainly: it doesn't carry temperature the way metal does. A plastic straw sits close to neutral whether the drink is iced or hot, and it's usually the straw you already own, the one that ships free inside a tumbler or a reusable cup.

What plastic doesn't do is stay looking new. It's porous enough that coffee, tea, wine, and anything with turmeric in it leaves a stain that doesn't rinse back out. Run one through a few hundred dishwasher cycles and the surface starts to fog and pick up fine scratches, not enough to see from across the room, but enough to give residue somewhere to sit that a rinse won't reach.

Stainless steel has no pores for pigment to grab onto and no surface for scratches to accumulate the same way. It carries temperature, so a metal straw in an iced drink feels cold against your lip, and that's the honest trade. What you get back is a surface that looks the same after a year as it did on day one.

Do plastic straws stain?

Yes, and it's the most common complaint about them. Coffee, tea, wine, and anything with turmeric in it are the worst offenders: pigment sits in the microscopic pores of the plastic rather than rinsing off the surface, and dishwasher heat tends to set a stain rather than lift it. Steel has nothing for that pigment to hold onto, so the same drinks pass through without leaving a trace.

Are plastic straws dishwasher safe?

Most reusable plastic straws sold today are rated for it: polypropylene and Tritan both handle normal dishwasher heat without melting. What the rating doesn't cover is appearance. Repeated cycles fog the surface and leave it faintly scratched, which is why plastic straws are usually sold in multi-packs rather than as a single straw meant to last. The manufacturer already expects you to replace them.

How long do plastic straws last?

Longer than people expect before they break outright, but breaking is rarely why one gets thrown out. It's the stain that won't rinse clean or the clouded, scratched surface that makes a straw look used up long before it's actually worn through. Plastic clouds. How long a metal straw lasts, and why.

See the full reusable straws guide for how metal compares to bamboo, glass, and silicone too.