Apparently (and probably unsurprisingly) weed/grass killers like Roundup can also affect bees: https://beyondpesticides.org/dailynewsblog/2021/04/roundup-shown

Apparently (and probably unsurprisingly) weed/grass killers like Roundup can also affect bees: https://beyondpesticides.org/dailynewsblog/2021/04/roundup-shown-to-kills-bees-but-not-how-you-might-expect/ https://beyondpesticides.org/dailynewsblog/2021/04/roundup-s... Roundup also seems to be bad for humans, which is probably why it has been the subject of various lawsuits and settlements and is also banned or restricted in a number of US cities, though not yet in the US as a whole.