how do you even do that? i would also have money trees: every person would have a thick forest of money trees in their yard, the trees would never run out, they would always be filled and have anything you want. here are the mechanics of pen holding. as long as you rinse the sprayer tanks out with water before switching chemicals, you should have no problem using them to kill both weeds and bugs. i find that sometimes, well actually, most of the time, it’s hard to imagine what the land we live on has gone through since its creation. 