Ok the area where I want to expand the tortoise pen is covered in Creeping Charlie. Is it safe to use round up to kill it all? If so how long do I have to wait till I can let the torts in there? The only other option I know of is completely dig everything out. I am not sure I am able to do that much work, LOL. I hate killing everything out because there is some good weeds growing in that area but to get rid of the Charlie I really have no choice. All the rain we have had the Charlie has really taken over. Any other ideas welcome.