Crawlspace questions: rodent control and other issues

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Not sure where else to post this, but here goes: 

I recently had a small sewer leak under my apartment building that the pest inspector discovered.  The leak itself has been repaired by the PM's handyman to my satisfaction but the Pest control vendor brought up the following issues:  

1.  He feels the need to do quarterly rodent treatments to the tune of $500 up front, then $125/quarter.  - this sounds like overkill b/c we've only had reports of 1 rodent in 1 unit in the dead of the coldest weather, which was addressed as a one-off issue.  No other tenant complaints.  

2.  Replace two crawlspace doors for $500.  - this in particular sound exorbitant - even if he recut the brick and installed a new door from scratch, this sounds like alot.  

3.  Fungus Treatment and moisture barrier install for the property $2200, plus another $500 quarterly.    My PM has said that he feels there is alot of overselling of fungus protection in the area, so he's not inclined to go through with the work.  I also feel like this is pretty steep for the work to be done, but I don't have a basis for that opinion.  

also on a side note - the sewage leak was repaired, but probably a gallon or two of sewage left in place.  Best way to address this would be Lime?  Cat litter and scoop out?  

The property is located in Norfolk VA if that helps; any and all input is appreciated. Thank you ahead of time.