The answer to 'weed control bare spots' is to first identify the cause of the bare spots and then take appropriate action to address it. Common causes include poor soil, drought, heavy foot traffic, or existing weed infestations. Symptoms may include thinning grass, exposed soil, or the presence of weeds.
For small bare spots, you can try overseeding the area with grass seed, applying a lawn patch product, or laying sod. For larger areas or recurring issues, you may need to address the underlying cause by improving soil quality, adjusting irrigation, or using pre-emergent or post-emergent herbicides. If the problem persists or covers a large area, it's best to consult a professional landscaper who can provide a comprehensive solution.