dirty pots that I can't get clean

[madame]

I have lots of denby oven dishes that I just can't get clean. They have marks on them that seem to have been there forever.

I have tried that fairy boost spray before the dishwasher that doesn't work, I have tried scrubbing....Anyone know what can get these marks off. The dishes aren't dirty they just have these built on stains....

Ideas would be very much appreciated.

Thionk some are impossible to get off, but try soaking with hot water and biological washing powder, works on a lot of stains

Are you sure it's stains and not just burn marks?

It wouldn't bother me tbh, who ever sees your oven dishes.

Try soaking them overnight with Ariel or Persil then going over the remaining marks with a brillo pad.

soda crystals worked a treat, thank you.

take your point on board Devilwearsprimark but I see them and they really bugged me as they never looked clean.

I fill my oven dishes with boiling hot water and then pop in a dishwasher tablet. Leave is to soak and hey presto! No stains!