I'd like to confirm that Round-Up Pro (EPA # 524-475) is okay to use for weed control in sidewalk cracks. The only reference to weeds I can find is that the best practice is to hand-pull-is that the only option? In a hot/humid climate, fertilizer use is minimal to none because plants grow very easily, but weed control is a big concern.

Are weed considered 'pests' and products must fall under SF Hazard criteria Tier 3?