I have these horrendous spots/stains on my passenger side airbag cover in my 2013 Mustang. They appear to be the result of cheap interior cleaner/protectant. I have tried some suggestions I've read on other posts (like dawn, peanut butter, mineral spirits, and cleanup wipes) but nothing I've tried has even touched them! I really need some suggestions on how to remove them!! Thank you in advance!

