Oh, those little buggers can wreak havoc.
Good luck with getting rid of them, I just started getting them inside, probably all the rain we have had has flooded them out of their nests and now they are rising up to higher ground.
Problem I have 2 dogs and hate using any sprays, for I fear they'll get it in them, my one dog is weird, I love her, but she is weird, she licks walls,clothes,and of course she'll lick the floors, so I have been very cautious.
Since they started coming here, I'm vaccuming every inch of the floors, and even walking around looking.
Ant bites can really be nasty, fire ants are coniverous, I almost went nuts while in FL, got attacked on the ankles while gardening at my parents former home.
Take care, I wish you well with being rid of the itchies.
DE