Two guys came including Cory Moss, one of the owners. Pros: They worked quickly and did the work as outlined in the estimate. They were accommodating when we found out the furnace repair man didn’t put an air filter back on when he came last week! We had to run to the store while they were here and waited patiently. Cons: Although it is a messy job in the vents, they left dirt marks from the bottom of their ladder all over our cream colored carpet. The debris left behind was to be expected, but they had a very large vacuum with them and could have done a once over around the vents they were cleaning. Lastly, they are in the middle of switching credit card vendors, so we had to pay cash or check.