Spray grass like commercial properties do.  

Will you be spraying the ceilings?

Plenty of hispanics are documented and still barely speak English. either way it's more prudent to find a good salt-of-the-earth hardworking immigrant family, do a hard series of checks on them and rent to those.

With regular annual inspections including scheduled spraying for prevention of insects/bed bugs as a former employee of a broker and as a tenant my observation shows 10 years is about the maximum.Personally, in my opinion carpet is highly unhygienic, attracts odors and has a short life compared to hard surfaced floors and it amazes me that it has taken so many years for the trend to switch reflected in more apartment complexes featuring hardwood (I'm in Reno, NV where there has been a surge of bed bugs so this may be a big part of the switch-regular preventive fumigation in addition to that for prior to move-ins and outs is common too.)

You can tell a gang park by crimes in the area, gangs standing outside at night, and even mobile homes spray painted with gang tags.

I spray one of these anytime a house smells like smoke, cat, bad credit, white trash, etc.After Fire SprayI buy them for under $5 each locally.

I put it in a spray bottle and apply it once for several days - mold gone.

I've used fabric softener in a spray bottle and let it soak in.

And you use those profits to buy more rentals. expect the prices are higher but the principle is still the same.I can't give you current info because I have been being held prisoner in Salt Lake City for the last several years.

Rich, I thought you were a South Dakota, Texas, Florida guy, I didn't know your were in Salt Lake, or are you just pick'n winners????