Dirty & Dangerous
Trip hazards and moisture is not a good combination to have with fuse boxes and other home maintenance equipment.
MOLD!
Having mold in your storage place is far from ideal, also the "Stack Effect" means that the crawlspace air will rise through into your house and into the air that your family is breathing, irritating allergies and asthma.
Safety First
Now that the CleanSpace liner has been laid down, there is still adequate access to all of the switch and fuse boxes, without having to deal with the dirt and other debris.
Wow!
The CleanSpace liner is incredibly thick and durable - meaning that not only are the crawl space issues resolved but this family now has a large storage space without any worry of damaging the liner.