It was a pain to prevent water intrusion.

Hugh gives a plausible explanation of an attempt to manipulate search engine results - though there would diminished benefit of trying this on an English, North American site from China or North Korea ... someone who can read the posts, could probably help identify their source (some one who sees the source IP addresses could also tell)I would think Cloudfare should be running intrusion/DoS detection on its perimeter and be blocking the IP source networks  - at least temporarily.

You can check them out on Amazon.If you are looking for a less intrusive method try a Thermo Fogger.  

They seem to appreciate it and, as far as I can tell, don't consider it intrusive.

I know in Puerto Rico, while there is desire to invest and fix it the way the investors want - the local governments are wary and can become overly involved and intrusive.

Since it's so small should I just knock on their door, or is there a better (and less intrusive) way of doing this?

Some DIY things you can do are to check for water intrusion.  

The main advantage is that most of your investors are already on Facebook, so this approach is less "intrusive" I guess. 

Open cracks plus a humid climate that gets heavy bouts of rain creates all kinds of problems from moisture intrusion.

Are there now mold issues or other contamination due to the water intrusion?