As soon as I opened the package, thought I would pass out from odor.  I have allergies to chemical, these smelled toxic.  I been soaking them in my washer for 8hours.  Had to change water.  Stuff i couldn't identify leaches out.
Update
After several days the toxic odor is still as strong as ever.  Realized what it smells like.  Paint stripper and turpentine.  Tossed them out.