Everything You Need to Know About Dishwasher Safe Items

Wondering what can and can’t go in your dishwasher? From baby bottles to copper mugs, this guide breaks down exactly which items are dishwasher safe — and which ones aren’t — so you can protect your kitchenware, save time, and avoid costly mistakes.


Are Baby Bottles, Haakaa Pumps, and Pacifiers Dishwasher Safe?

Most baby bottles are dishwasher safe, especially those made from BPA-free plastic or glass. Look for labels confirming this, and always place them on the top rack. Silicone items like the Haakaa breast pump are also generally safe in the dishwasher, though handwashing can extend their life. For pacifiers, check for dishwasher-safe symbols — many are top-rack safe but should be kept in a dishwasher basket to avoid loss.


Can You Put Water Bottles, Tumblers, and Reusable Cups in the Dishwasher?

Popular bottles like Nalgene, Hydro Flask, and Yeti have varying dishwasher safety.

  • Nalgene: Most new models are top-rack dishwasher safe.
  • Hydro Flask: Newer bottles are dishwasher safe, but older models may not be.
  • Yeti: Tumblers are dishwasher safe, but lids should be placed on the top rack.

Aluminum cups are typically not dishwasher safe unless labeled, as the dishwasher can dull or discolor them.


Is Your Cookware Dishwasher Safe? What You Need to Know About Melamine, Stoneware, and More

Not all cookware is dishwasher-friendly:

  • Melamine: Top-rack safe but should not be placed near heating elements.
  • Pyrex/Corelle: Usually dishwasher safe, though older or cracked pieces should be hand-washed.
  • Stoneware/Ceramics/Pottery: Often safe but check for hand-glazed or delicate finishes which may be damaged over time.
  • Porcelain: Typically dishwasher safe unless it has metallic trim.

Can You Safely Wash Knives, Wooden Utensils, and Cutting Boards in the Dishwasher?

  • Knives: Technically safe but not recommended — dishwashers can dull blades and cause rust.
  • Wooden utensils: No — they can warp, crack, or degrade.
  • Cutting boards: Plastic boards are usually fine, but wooden ones should always be hand-washed.
  • Rubber spatulas: Check for dishwasher-safe labeling; many are fine if placed on the top rack.

Can Appliance Parts Like Rice Cookers, Grates, and Blenders Go in the Dishwasher?

  • Rice cookers: Inner pots are sometimes dishwasher safe — check the manual.
  • Grill grates: Usually not dishwasher safe due to grease buildup and coating damage.
  • Blender parts: Most lids and jars are top-rack safe, but always remove sharp blades for safety.

Are Craft Materials Like Vinyl, PETG, and Mod Podge Dishwasher Safe?

  • Vinyl decals: Permanent vinyl may survive a few washes, but it’s safer to hand wash. Dishwasher-safe vinyl exists — look for labels.
  • PETG plastic: Often used in 3D printing, PETG can warp in hot dishwashers — handwash only.
  • Mod Podge: Only the Dishwasher Safe Mod Podge variant is suitable for dishwashers, and it requires a 28-day curing period. Even then, top rack only.

Is It Safe to Wash Bongs, Mason Jar Lids, and Copper Mugs in the Dishwasher?

  • Bongs: Technically possible, but not recommended due to resin buildup and breakability.
  • Mason jar lids: Often metal — handwash to prevent rust.
  • Copper mugs: Not dishwasher safe — the finish can tarnish or erode.

Are Popular Brands Like Yeti, Helimix, and Corelle Dishwasher Safe?

  • Yeti: Yes — tumblers and bottles are top-rack safe.
  • Helimix: Dishwasher safe (top rack preferred).
  • Corelle: Most collections are dishwasher safe, but older pieces with decals may fade over time.

General Tips for Knowing What’s Dishwasher Safe and What’s Not

  • Always look for a dishwasher-safe label or symbol.
  • When in doubt, hand wash.
  • Avoid placing plastic items near the bottom rack — heat can warp them.
  • Sharp knives, wood, cast iron, and delicate finishes usually require handwashing.

By following these guidelines, you’ll keep your kitchen items in better condition — and extend their lifespan