Step 1: Wash all clings with a mild soap to get all dust and dirt that has collected on them.
Step 2: Towel dry and lay flat until completely dry.
Step 3: Clean your windows where the clings are going to go.
Step 4: Positions the cling onto the window (this is where I have the problem the edges always curl up not laying flat)
Step 5: The solution to problem take your hairdryer and turn on to low heat about 6 inches from the cling on the window. Let it heat up for about 10 seconds and smooth out cling VOILA' cling is good as new!