Dishwasher-safe materials
General rules by material, with exceptions.
Usually yes
Plain stainless steel is usually dishwasher safe, but insulated items, coatings, and glued handles can change the answer.
siliconeTop rack only
Food-grade silicone is usually dishwasher safe, often on the top rack, but thin straps and printed designs may need gentler care.
woodUsually no
Wood usually should not go in the dishwasher because water and heat can warp, crack, and dry it out.
glassUsually yes
Everyday glass is usually dishwasher safe, while crystal, antique, painted, or delicate glass should be hand washed.
plastic lids and containersTop rack only
Dishwasher-safe plastic usually belongs on the top rack to reduce warping from heat.
nonstick coatingsIt depends
Some nonstick cookware is labeled dishwasher safe, but hand washing usually makes the coating last longer.
cast ironUsually no
Cast iron should not go in the dishwasher because it can rust and lose seasoning.
ceramicUsually yes
Everyday glazed ceramic is usually dishwasher safe; handmade, antique, or metallic-decorated pieces may not be.