So you don't think the big chemical companies do enough advertising?  WOW.  I think they do enough advertising.

Maybe what you really want is for them to change their message, change their target audience, to reach the consumer better. 

I suspect these companies have done the research and know that the best person to reach the urban consumer is the farmer, not the big bad chemical company.   I think you are going to be seen as more believeable, more credible in the eyes of the non-farming urbanite.  And so they try to elicit your support in that effort.   That's my take on it anyhow.