My elderly friend's 20 years of 'homeowner special' renovations have left a slew of code violations like no P trap under the sink because it didn't fit with the existing drain and the bathroom vanity the wife picked.

plumbing is being kept the same above the trap.

Should I use a spray to kill him then try and patch it up I have traps set and only get squirrels and cats.Any help?

The millennial generation was defined as someone who was born between the years 1979 to 1993.Best U.S. markets for buying and selling single-family rentals in 2017

I asked LL about Home Depot foam underlayment (which is much cheaper) and they said since its foam it has a tendency to feel unstable because of the air that is trapped below and over time it will become less and less even....not sure if this is just a ploy?

Born and raised in Boston.

Born and raised in Kailua and will be glad to meet up.

I was born and raised in Southern California (born in San Diego County, now reside in Orange County).

However, there are a few questions that are weighing on my newly-born real estate mind that I hope I can get some thoughts from the community. 

It's not enough to just call when they complain, you have absolutely got to go on a rat hunting expedition at the house and this is going to take time.First, spring for a bunch of traps for the tenants.Second, bring them over, already baited, and place them inside of cabinets, in the crawlspace/basement, etc.