I would have concerns that even after spending the 5K to clean up that there might be residual chemicals or other contaminants around.

If the tenant maintains the pool they almost always try to limit the timer for the pump or have differed maintenance not emptying baskets,not adding water, not checking chemicals properly.

ive heard that the allure floor has the really bad chemical smell when you install it and the pergo havent heard anything bout a smell and its scratch resistant and easy to maintain hope this helps and it like 30.00 a bundle

this has come up several times in classes I have taken as a Realtor. the "chemical off gassing" can make people sick for years after you paint. search the web about this, its really a bad practice.

You can do a google search and buy the actual chemicals the pros use.  

Tenant agrees to notify Landlord in a timely manner of drain stoppages that they are unable to clear themselves.2.DRAIN CLEANING PRODUCTS.Tenant agrees not to use caustic drain cleaning chemicals in any of the drains or plumbing fixtures.Such products may cause damage to the plumbing system and may be hazardous to the environment.Tenant may be able to keep drains clean and clear with regular maintenance by pouring down the drain a quarter cup of baking soda followed by a half cup of vinegar.If there is a minor clog in the p-trap (the curved portion) of the pipe under the sink, Tenant may disconnect the pipe, clear the pipe manually, and reconnect the pipe to clear the clog or may call Landlord for assistance.

Steven Taylor I never, ever let tenants do pool care; chemicals not right, damage pool finish etc.... take care of it professionally People share pools all the time in apartment communities, so I don't see a reason why it can't be for both houses.

Told him I would help him fix the issue and educated him that mice, unlike roaches and bed bugs, aren't treated with sprays and other chemicals.

Chemical warfare.Biological warfare, folks will go to an infected tree, beetles, worms, fungus and collect the stuff and plant it on the target.

Best of all, we have a great plumber, Bob.We do not allow chemical drain cleaning products to be used in our plumbing systems and we cover that in our rental agreement.