Seriously, nanoparticles are proposed as a cause of various lung diseases. These particles are present in any source of soot, but they can be produced from natural sources too, like trees. You will have more of them near sources like a freeway, but the particles are transported pretty much everywhere, so you can't completely escape by leaving town. Since there is no proof that nanoparticles actually cause disease, you can stop worrying.

As for websites, your only rights are what are granted by the site themselves. You really have no rights, per se, only contract. By paying them, you are expected to receive the services they provide for that price. If they fail, your only recourse is a lawsuit. Most of the time the price of the suit is more than the reward you'd get.

Oo, I just thought of another thing! While glyphosate is the active ingredient and has been tested, there are “inert” ingredients which may or may not be a problem. Wow, it’s enough to make you paranoid!

I would chat with the yard guys about not spraying where there aren’t any weeds. Unless what they are using is a pre-emergent (meaning, it kills the seeds, etc before they have a chance to grow), they are just wasting their time and money (and when environmental arguments don’t work to get someone to stop something, economic arguments will work!!). Here is a fact sheet about glyphosate that might answer some of your questions (or cause you to have more!).

Depending on where you live, the person spraying might need to have a license (in California, they have to be a registered Pest Control Operator) and oftentimes people who only spray round-up don’t get those. Might be an achilles tendon to ask them about their license if you want to play dirty. Good luck!

Not that particular one. They are sparying round up in beds to keep the weeds down the active ingredient is glysophate which will not build up in the human body. Certain types of trees and shrub insectacides will however but you have to have a blood test and it takes years. The handlers of these chemicals only get tested once every six months and they are around it on a daily bases. The U.S Department of Agriculture is very strict on these uses and wouldn’t allow them for residentual use anyways. The label would read strictly for commercial use only.
In other words Dont drink and your fine!

You should be more worried about getting laid.

Products like this are 98% water and will cause you little problems.
I don’t suggest rolling around nude, with open sores in the pine straw after it is treated. In fact, they should ONLY be targeting weeds. If nothing is there, call company and tell them.
You have enough dangerous products under your kitchen sink to kill the entire family, so don’t worry about a little bit of weed control.

Now go drink a beer,sorry, Fresca, and relax.