鄰居介紹用過的化學除草劑效果還可以。草全殺光說是管一年，雨水多的地方應能管幾個月。劑量大便宜。電池驅動噴霧器省力。

https://www.homedepot.com/p/Ortho-GroundClear-Year-Long-Vegetation-Killer2-Concentrate-1-Gal-Kills-and-Prevents-Weeds-Up-to-12-Months-4657110/326946300