My wife won't let me spray roundup or another chemical around her garden so I've been tasked with keeping the weeds down around the fence line of a chain link fence around her garden. I've come up with putting down some 30# roofing felt/tar paper around the fence on the ground. Any suggestions for keeping the tar paper down on the ground and not fly away? I know if it stays down it will keep weeds from coming up. I just have to keep it in place. I've also read about vinegar, baking soda and salt but I don't know how effective that is.