I have some clover in my lawn here in DC that is out of control. I
understand that some clover is beneficial, but this is definitely too much
of a good thing.

Is there something safe that I can put on it? I have 2 little ones, and I
am not about to put anything toxic on the lawn.

On a side question, my neighbor, who lot is slightly higher than mine, uses
chemicals freely, like Weed-B-Gone. Should I worry about runoff from his
lawn?