Radiator grass seed extractor

I have been on the land most of my life and one huge problem are Grass Seeds getting into the radiator and air conditioning grids.Blocking them up completly even with having placed fly screen in front of the grills.Causing enormous damage to the vehicles.This has been happening for years, but there still has not been any improvement to fix or improve this problem.Most farmers on the land would be having the same problem.I wonder if something could be designed like a filter,finer then fly screen which could be placed in front of the grids to keep the grass seeds out,And easily removed for cleaning.This could be build into the new farm vehicles,and would fix an enormous problem and it would be one less job the farmers would have to deal with.