Quoted from VALIS666:What do you guys use for weeds? This is my fourth summer in this house. Year one I used Roundup, which is effective, but also stays a long time in the ground and over time works its way out further than you sprayed it and kills the grass next to the beds.
Year two I used Weed B Gon, which is also a chemical treatment but supposedly less hazardous to both grass and people/pets, and the results were decent, not great. However, it's main ingredient, 2,4-D, has recently been put on a WHO advisory list, but plenty of agencies say it's safe. One of our dogs got cancer and sadly died from it last year. Are either of these chemicals responsible? Impossible to say, of course, but I'd rather not roll the dice again having three dogs currently, two of them puppies.
Last year I used one of those long blow torches that hook up to a propane tank, which is fun of course, but it takes *forever* as you have to hold the torch over every weed for about 30 seconds to make sure it's dead at the root. If you have 10-20 weeds, it's great. If you have hundreds, it's not an option. It's also not very fun to use in the hot summer, obviously.
This year I'm using a rototiller attachment to my Ryobi 40v multitool, and that has mixed results as well. Works great if all you have is soil and weeds to work with, but the beds I'm trying to weed have lots of trees and bushes, which means tons of roots. This thing is tough enough on the back after a while, but getting caught on roots, which then sharply jerks the machine forward, is murder on the back after an hour.
The best solution is one day laying down mesh over these beds then putting stone on top, but I'm not ready for that project this year. Hand picking isn't really an option considering there's four large beds plus an entire paver block patio where weeds come through the gaps.