It's one of the big three chemicals used to keep the water balanced.

If the topcoat is truly a polyurethane, that stuff cures in way that nothing will ever chemically bond with it.

Who wants to admit they are inhaling poisonous chemicals? 

The thrid step is cleaning the area with soap and water and then treating with a residual chemical.

I am sure he will fert , and use chemicals .  

My group focuses mainly on industrial construction - oil/gas/chemical facilities, power plants, mines, dams, etc. - but the ability to manage clients, crews, schedules, budgets, contracts, and the like, is definitely applicable to many areas of REI.

I believe that the consistent cash flow rental properties 'can' provide is one of the best hedges against the volatility of the stock market, and is the single most reliable way to ensure income into retirement.I actually work full time as a Regulatory Specialist / Environmental Compliance Manager for a large chemical manufacturer based in Maryland.

@Kristian Fernandez   First thing you should do is get pre-aprroved with a lender.....I used Shawn Huss with Chemical Bank in Ohio.....Until you do that you won't know what you can and can't do.Then determine if you want cashflow,...or appreciation or both......I decided strictly cashflow....and chose Cleveland....flew back to Ohio twice to check out areas and brokers and property managers....2 SFR's and 2 duplxes later I have all 6 of my OOS under Holton-Wise....check them out.

If you change your mind again, I would vote Chemical/Mechanical/Electrical engineering with a minor in Computer Science or Dentistry ( Specialized is even better: Ortho, Pedodontist, etc...).  

It is quite morbid to look out your front window, or to go outside for any reason and to see a funeral home each time (and everything that comes with it: hearses, coffins, distraught family/friends, toxic chemicals used for embalming, possible traffic issues with funeral processions from 4 funeral homes on same street etc.).