I am using the Isopropyl with Melamine Foam to get the ground in dirt off the playfield.
When I removed the mylar I cleaned up with Shellite, available Bunnings.
Another tip from I got from Nino!

Ok great thank you.
now i know what can be used i will remove the mylar, on the machine in question has mylar in three sections, look like it was kit or something, only one section of mylar looks crappy so ill make a template in cardboard to match the original, section then re mylar that,
cheers for the tips on cleaning it after wards, who is the best person to buy mylar from?