Why wont ants walk across salt ?

Question

My daddy told me to put salt around my humming bird feeder and i dont know why how does salt keep ants away

Answer 1

They have high blood pressure.

Answer 2

i've heard the same thing about using chalk

Answer 3

they dont like salt

Answer 4

might be because, just like a slug they get messed up by salt.

Answer 5

whys this in birds

Answer 6

i dont really know but its a good idea im going to try that

Answer 7

Burns their skin