Anything harder than plastic (as nylon) scrub pads will make small scratches that will fill soon after you start using the pans.

In the US, most modern ovens have a self-cleaning setting. It keeps the oven at maximum temperature for an hour or more, burning all the crud off the sides, bottom and grills,

Try removing all plastic or wooden handles. Place a few pans in the oven and run the "self-clean" cycle. It is hard to believe that any will melt. If so, they aren't good for much so you will not have a difficult decision concerning what to do with them.