Question: My yard was invaded by grasshoppers this year. I tried to spray, but they kept returning from adjacent property where the new owner apparently does not try to control them. What can I do to protect my plants? K., no city given.

Answer: You have done all that you can do. Grasshoppers are highly mobile, so unless you’re willing to stand out there spraying all day long every day, they’re going to reinvade your property each year. The hope you hold is that some years (perhaps 2013) are much worse than others. Maybe next year will be a light one. Hopefully your new neighbor will also start taking action.