Had a friend ask me to look at possibly spraying some "weeds" out of his front lawn. I looked at it, and it's ground ivy (and not a lot of it, actually). Got me thinking, I could use another sprayer. Currently, my smallest sprayers are backpacks. I don't mind adding another (or 3). But, I was wondering if any of you guys use handheld sprayers? If so, what warrants you using that size (over a backpack)? And, if you use them....do you have a recommendation? Are they easier to clean (completely)? Thanks.