Grandma put bacon grease on them,
Mom used clear fingernail polish,
I use After Bite from Walmart.
Grandpa got stung many, many times when he ran into a bee/wasp/hornet? nest while bailing hay. Right before he passed out he told the young men helping him to pack him in mud from the river that ran by the field. By the time the doctor got there he was awake and talking. The cool of the mud takes down the swelling and the drying pulls out the stingers.