I have a NO SOLICITING sign out, guy comes to my door & rings the bell & I do not answer, he stands there for the longest time then BANGS on my door yelling "Environmental water I'm here to test your water!" I DO NOT answer, he leaves only to return harassing again, to the point I open my door & let him know I'm about to call the police. They make people think they are with the city & checking water but they are selling water softener systems & that's some shady bullshit way of doing business-you're crazy if you deal with these people!