邻居介绍用过的化学除草剂效果还可以。草全杀光说是管一年，雨水多的地方应能管几个月。剂量大便宜。电池驱动喷雾器省力。

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