Its a huge task just think 6 lorries of paint spread over the fields the pits etc and paintballers arn't known for there tideness. San Diego we filled about 4 or 5 30ft containers with rubbish and paint + 20 or so industrial wheeli bins not to mention all the hundreds of baggs of cans and bottels that are recycaled.
In anser to your question lots of laborours and road speepers.
The worst is huntington ever ball and every hit or paint spoldge has to be scrubbed of