I finally got around to dropping a couple large sweetgums beside one of my plots yesterday. They kept one small area in shade most of the day. I plan on putting a couple crap apples in the area. I had my spray bottle of 50% GLY to treat the stumps. It leaked like a sieve. I cannot find a spray bottle that will hold up for more than a few weeks without leaking. Can anyone recommend a good quality quart size spray bottle that will handle herbicides without leaking?