Becky, it does depend on your health, if you are not having problems at 60 you should be alright at 70. I have had a lot of arthritis in my spine for years and with age it doesn't get any better. I have tried Preen but I think the darn weeds here are getting immune to it. I also have tons of wild violets in my garden and nothing seems to kill them. The only thing I saw that ever killed them was one spring we had a lot of slugs and the slugs ate them down to nothing. Maybe that will happen again this year as we are having so much rain and slugs love wetness.
