You might want to be a bit more patient before you start pestering after not getting an answer within 44 minutes.Not to be harsh, but if you don't know what you're doing yet, why are you considering million dollar properties?

I would suggest that before taking such a harsh stance against my company it would be best to get your facts straight.

A UV light will need to have the bulb changed probably every year.One investor that I know claims that a disgruntled tenant continually ran the water to saturate the septic and drain field, causing him to spend $25,000 for a new system, immediate afterwards he sold the property.Shallow dug wells are susceptable to all kind of pollution including fertilizer, chemical and natural, septic systems, insects and even a decaying animal.

Divide the building with a wall, front half cabana bar, put a side door in to the back, 5' wide, from the door you'd have a vanity, then toilet then shower, last 3 feet a full length sauna. toilet, Outside on the back wall put a rack and cabinet for pool equipment and chemicals.

I guess timing of the roof in other states comes down to how harsh the climate is there.The heat does prematurely bake roofs here but we are lucky to get an inch of snow a year so the cold is not an issue really.

I'm coming across on the harsh side to make my point understood!  

I then attended Purdue University and received a degree in Chemical Engineering.

(I don't mean this in harsh way, so sorry if it feels that way.)First, You probably are not getting a significant enough margin on your properties. 

That does look like it could be the sheet of underlayment that is high and the door has scraped away at it - check the bottom of the door - it will have matching wear marks.If that's not it, then perhaps it was a chemical conflict... certain vinyl and rubber can often be incompatible when moisture is introduced.  

You can go with the chemical treatment which is cheaper to get rid of them but you have a greater chance of recurrence.