For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
I have a soft brush on my vacuum cleaner and suck it clean. Both the lcd and glass. The trick is to NEVER touch the LCD so it stays clean with just dust on it. NEVER rub with a cloth on the LCD when there are glass particles on the screen from the cracked glass. Always clean with soft brush or blow away the dust. Use a micro fibre cloth to clean any grease from the glass/LCD.