Although the bottles are supposedly dishwasher safe, they don’t fit vertically on the top shelf. I also feel even if they did, water would not get inside to clean the bottle sufficiently. However, it is not difficult to hand wash with soapy hot water and a good shake.
Say their dishwasher, safe, but are not. ! Put it in the dishwasher to clean for the first time before using, and neither one of them will now fit into my stream!!!! Poor quality!!!!!!!!!
So we've had the same bottles for a Soda Stream for years. They are way past the expiration. It's nice to have an affordable upgrade that is dishwasher safe.
I like to use a little less than recommended of the flavors for Pepsi Zero and Diet Mountain Dew. I think they taste better than buying cans of them at the store! I’m really enjoying the different flavors.