I have about 40 remote offices (more like garages/machine shops). Each Has 1-4 PC. The Problem is the DIRT. I go through hardware fast. Every 3-4 months I am replacing parts (these PCs are only 1-2 years old) they are covered in grime, dust, dirt, and stuff that I don?t even want to know about. It gums up fans, kill power supplies, and every thing else. Any Ideas to keep these PCs clean would be great (other than every two weeks blowing them out with air—already do that!!)