My screen material is dirty
Many small areas such as streaks or smudges can be carefully cleaned with a mild detergent (soap) diluted to 30% to 40% with water and applied with a soft, non-abrasive cloth or a gentle brush (e.g. a soft toothbrush). If this does not work, you can also use a non-ammonia all-purpose cleaner such as 409 to clean the affected area - just be sure not to scrub too hard in one spot since this may cause the material to wear out in that spot. Mr. Clean magic erasers works wonders on the screen material.
If this does not help clean your projection screen. Please contact us at firstname.lastname@example.org and send the following information.
1. A picture of the dirty marks or areas in the screen
2. Your order number and the dealer website you purchased the product from