I get very confused when I see `se` in front of some verbs in Spanish or about when to put it in front of a verb when writing in Spanish.

From my understanding I think it is used when someone is trying to say "you" as in "you in general" or "they" as in they in general.

So if I were to say they put pesticide on the vegetables but was not talking about anybody specifically as in they in general, would I say....

> 
> Se pone pesticida sobre las verduras
> 
> 
> 

or do I have to use "pone" in "ellos" form because I said they....

> 
> Se ponen pesticida sobre las verduras
> 
> 
> 

Can somebody help me figure this out and what the difference in these two sentences are?

> 
> Se pone pesticida sobre las verduras
> 
> 
> Se pone**n** pesticida sobre las verduras
> 
> 
>