Polyurea stands for maintenance, the "A " component is a large factor for failures.
Isocyanates do crystalize and clogg up the machines, filters and guns.
But most of the problems occur with your stick pump.
The polyurea factory offers a service whereas you can swap you dirty iso stick pump for a newly rebuilt one at a given rate.
The polyureafactory has a hands-on global service and fully certified sprayer/mechanics for hire.
The polyurea factory also has several proportioners for rent and for sale, call for specs.