This is an inexpensive way to refresh windshield wipers that many people have long advocated. However, for most people, we don't recommend this due to the downsides. First of all, you need to remember the exact type of wiper blades on your car so that you can get the correct replacement element.  According to car experts, installing a refill will be more difficult for you than simply attaching a wiper blade to a car's wiper arm.