Keep after those weeds!

Knock down carpets of smaller ones with a hoe and make sure it's sharp, and it will do an impressive job. Otherwise, hand-pull individual ones. You can use boiling water on those stubborn ones between the cracks of your sidewalk. I have also zapped weeds in the cracks by filling a spray botle with white vinegar and a few drops of dish soap and hit the weeds. Just be sure that you do not hit grass or flowers. If the weeds isn't dead in a day, spray it again and that should do it in.

How can you disinfect your pot/cantainers without chlorine bleach

Here is a great tip on cleaning your plant containers, if you want to clean you containers organically instead of using chlorine bleach. Wash containers well in warm soapy water, then rinse them in 2 cups of white distilled vinegar diluted with 4-6 gallons of water and allow them to air-dry. The vinegar can kill pathogens in recycled containers.