Dirt will still accumulate on top of weed barrier fabrics. Weeds will grow. It is not very effective as it ages.
How are you getting rid of weeds now? Pulling them? They will grow back because parts of the roots will break off. Every broken off part will grow into an entirely new weed. So pulling them makes them grow back worse.
Here is the way to solve the weed problem. As suggested, spray a weed killer such as round up. That kills the weed all the way to the root. Only spray on a very calm day. Wind will blow it onto things you don't want to kill. Now wait a week for it to work. Then pull what remains, but you can leave it and it will shrivel up and disappear.
Highly caution against using salt or vinegar solutions. They may kill the weeds, but it also contaminates the soil. As those migrate with rain or irrigation, they will kill shrubs and flowers. Replacements plants will also die once their roots are exposed to them.
There are 2 versions of weed killers.
The one you want for your garden is active for a few hours after being applied. Once exposed to sunlight it becomes benign.
The other type is a long lasting type. You want that for driveway cracks where you never want things to grow. Never use that in a flower bed because water will spread it around (just like salt or vinegar) and kills grass, shrubs, flowers, etc, for a year or longer.
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