He is just spraying lantana so am presuming he's just using roundup (glusulphate).
I've got a top feeder coming so hopefully that will help when I need to use it. Leaving the bees alone for now, I'll do a thorough inspection this weekend to see if they have accepted the new queen, and to see how things are going. I saw a hive nettle at the entrance of the hive though. So that's going to be another hit for them. But going to install traps this weekend same time. Hopefully all goes well.
Right after this about three days later I found a whole bunch of bees dead outside the front of the hive and discovered they had been poisoned due to my next door neighbour spraying lantana. I don't know what to do.