---
title: "What can and cannot go in the dishwasher"
description: "5 straight answers about what you can dishwasher, each with what actually happens and what to do instead when the answer is no."
url: https://atoneplace.net/can-you/dishwasher/
site: "At One Place"
---

# What can and cannot go in the dishwasher

5 questions about what you can dishwasher — 0 yes, 3 no, and 2 that genuinely depend on the specifics.

| Question | Answer | Short version |
| --- | --- | --- |
| cast iron | No | No. Dishwasher detergent strips the seasoning and the pan rusts within hours. |
| knives | No | No, if you care about the edge. Heat, detergent and knocking all dull and damage it. |
| non-stick pans | It depends | Only if the maker says so, and it still shortens the coating life considerably. |
| insulated bottles | It depends | Only if it says dishwasher safe. Older vacuum flasks can lose their vacuum and stop insulating. |
| wooden spoons | No | No. Prolonged soaking and heat raise the grain, then crack and split the wood. |

## Read the full answer

- [Can you put cast iron in the dishwasher?](https://atoneplace.net/can-you/dishwasher-cast-iron/) — No. Dishwasher detergent strips the seasoning and the pan rusts within hours.
- [Can you put knives in the dishwasher?](https://atoneplace.net/can-you/dishwasher-knives/) — No, if you care about the edge. Heat, detergent and knocking all dull and damage it.
- [Can you put non-stick pans in the dishwasher?](https://atoneplace.net/can-you/dishwasher-non-stick/) — Only if the maker says so, and it still shortens the coating life considerably.
- [Can you put an insulated bottle in the dishwasher?](https://atoneplace.net/can-you/dishwasher-insulated-bottles/) — Only if it says dishwasher safe. Older vacuum flasks can lose their vacuum and stop insulating.
- [Can you put wooden spoons in the dishwasher?](https://atoneplace.net/can-you/dishwasher-wooden-spoons/) — No. Prolonged soaking and heat raise the grain, then crack and split the wood.