This stuff works!!
We have also just sprayed out our filters to clean them which took a while.  Using this filter blaster made the process so much faster and the filters a ton cleaner!  I just sprayed each filter all over and let them sit for about 5 minutes, then rinsed with water and the bugs and grime just came right off.  My filters were white when I was done!  I was amazed.
Rating: 5 stars