However, on the inside of our house it was far exceeding the normal ranges (normal was something like 700 particles per square meter and we had something like 1777 particles per square meter).

I already went through this in my former career with the diesel engines on our excavators: at EPA Tier IV Final the particle count allowed in the exhaust was less then the average ambient air in a city - which effectivley turned the diesel engine into an air clearner.. 

Vacuum carpets and upholstery to remove loose particles.

The dishwasher may have a grinder in it for food particles, and the discharge might go into the disposal.

I have remodeled several hundred places and the ones made with particle board look good but don't last. 

You can look at a mobile home and see it as an easy rental with new carpet, trim and some paint but there are other bigger uglier expenses that can come up.Roof Replacement, soft floors (water damage) in kitchens and bathrooms- most floors are particle board, exterior door replacement (special order), underbelly insulation falling, bad hot water tanks with rotten floor underneath (real joy), bad windows (water again), bad bloated siding (water), water damaged base frame around perimeter of home, cracked tubs (special orders) and frozen pipes (Good luck finding a plumber to come work on a mobile home- they do not exist). 

(particle board vs wood) We have bought entertainment centers on Amazon which have been well made.

Great quality for the same price as HD and Lowes particle board cabinets.

You can get very sick or die from hantavirus by inhaling dust particles contaminated by sick mice.

There is another product that you can get in an aerosol can that also treats odors.