Put out a giant fan, like the ones used in stables, facing yr neighbor’s place when those guys (who are being poisoned Every Day) show up to spray.
That really fucking sucks.
ETA:
A wonderful next door neighbor briefly worked for a lawn-spraying company, and mom felt obliged to let them do ours. All our cats got cancer and died. She didn’t tell me how long they did it; I know he was with them less than a year.
Her husband was a warpedly jealous asshole who wouldn’t let us have the cats indoors, but mom didn’t have the sense to keep 'em permanently indoors anyway.