If it is in an open area I would simply suggest lopping every culm down to soil level then plant some grass seed and keep that area mowed. For the parts that the mower doesn't reach, I would suggest digging those out. It can take until next year to exhaust the rhizome system depending on what species it is but as long as survival shoots keep emerging a bit smaller each time, the energy is getting depleted and you are getting closer to eradicating the wholeplant.

Fire ants make mounds and not holes. The mounds start out small and become larger as the colony population increases. These mounds look rather innocent until you disturb them, and ALL of the ants boil out of the mound all at once. Again, there is never a discernible hole. I never worry about ants in my yard and garden, other than fire ants. Fire ants can be a problem for humans, pets, bird nests, beneficial insect eggs and larvae, and such.

The common yellow oxalis we have here has tiny "bulbules" (sp?), which lurk 12 -18 inches under the ground. You can easily pull up the plants, of course, but those tiny bulb things stay under the soil, and up it comes again. I once had a gardener who decided to eradicate it from a flower bed which is about 12 feet long and 6 feet wide. He actually dug up the top 2 feet of soil, and sifted it by hand to get all of the tiny bulbs out. That worked for the first year, but by 2-3 years after he did that, back the oxalis came. So, being lazy, what I do is just admire it in the Spring, except where it is trying to smother other plants. Then just pull it out around those plants. By late Spring here it has died down, and I pretend it is gone. Of course, it comes up again the next Spring. It is one of our first blooming plants to bloom (starts Jan/Feb), so I just regard it as such and let it be mostly. One of my cats likes to eat it (we used to eat it as children - we called it "sour grass"). Jackie

I saw one in my Perle D’or and according to the insect app it’s the oriental beetle (not the Japanese beetle) ...I usually let beetles be in the garden but this time I didn’t want to risk to have another pest on roses. I found another today on the Havana Blues geranium...same fate, cup of soapy water ah well. See if yours it’s a match to the pdf description, google images too. http://cues.cfans.umn.edu/old/Web/247OrientalBeetle.pdf