The Great Sunflower Project

I am so delighted to see Osmia back in my garden. I haven't seen them for a few weeks. My neighbors recently told me they were having a hornet problem and had the exterminator come out and take care of the problem. After they told me that, I found a very sick looking honeybee (it was a honeybee and not a osmia. I finally learned the difference!) on my sidewalk. I carefully re-located it to my garden. It was having trouble hanging on to the sunflower and eventually fell down onto a leaf where it stayed. I was heart broken, I figured that if she was going to die, at least she would die happy in a sunflower instead tragically by someones foot on the sidewalk. I then began to wonder if my neighbors really had a hornet problem, or if they had just exterminated a honeybee colony! Does anyone know how I can Kindly educate those who live around me about our precious pollinators before they just start spraying??

Thanks!
Jenette