Product review (2 stars): Old burner biwls needed replaced .
I was especially pleased with the ' non-stick ' description  because bowls I have used in the past did not have this feature so I have been replacing THEM REGULARLY

The bowls I have used in the past did not have the ' non-stick ' feature , so I have been replacing them regularly . Grubby burner bowls happens to be one of my pet peeves .I t is my habit to give them a whirl in the dishwasher once a month or so , or them they need it , whichever comes first .
Loved these bowls until something was spilled in one and it had to be washed . Not non stick . After the bowl was removed from the dishwasher with the spill still stuck on , tried washing it with a gentle plastic pot scrubber ; did not help . Did not use something harsh as it would have surely removed  any non stick surface , if there was any .
I'll use them until they became unsightly , them back to buying again