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Apply screen clean with a wet sponge and cover both sides of the screen and soap up both sides. You will notice the Derivan Block Out will start to break down.
Put a wet cloth over the screen and Wait for 3 – to 5 mins to let it soak. After soaking, get an old toothbrush and start working away at the screen. Using a circular motion work away at the block out in the mesh, turn over the screen and work on both sides until the block out has been removed.
*Note the longer you leave the block out on the screen (more than five days) the harder it becomes to remove.
RECOMMENDED TO USE GLOVES WHILE USING DERIVAN SCREEN CLEANER.