Easy to use.  Does a great job.
I had a very dirty, large painting to clean.  This product did an amazing job of removing the dirt.  Its very easy to use and comes with everything you need.  You should know that if you are trying to clean a large painting, one jar might not be enough.  I have had to order another jar.  But its worth the cost, because my painting now looks amazing.
Rating: 5 stars