I would like to remove:
Oxalis, I am constantly digging up bulbs which quickly grow from seed. If you mow over a clump and the flowers shoot out then they will drop seeds and you will have a clump everywhere the seed fell. They grow cluster bulbs quickly then they have a long tap root with more bulbs at the bottom so you have to dig down at least 8 inches to get all the pea size bulbs.
Deadnettle, Argh!! each plant has a thousand voluntary seedlings!! Last year everyone's yard was covered with them. The good thing about this is that it withers away when it gets hot.
Slugs! Last year they started eating my daylilies. Most of my hostas are slug resistant and the ones that are not I just tuck pine straw around them, slugs cannot slide through pine straw. In this neighborhood everyone has pine trees so all I have to do is grab a bag off the curb on trash day. Works for me.