1. Considering how it is transmitted, which would be the MOST effective preventive measure against Lyme disease among a stable of racehorses?
Spraying down the stables regularly with an insecticide designed for
ticks.
Wrapping all horses in special blankets to protect them from biting
flies.
Regularly replacing the hay in the stalls to get rid of ladybugs.
Plugging in sonic deterrent devices to scare away bats at night.