Hi abbysian,
Lol..
The kinds of 'Lice' which some Birds may haveare not the kind which will bother people anyway.
'Mites' are of many different kinds, and everyone's home, offices, Cars and so on along with virtually all situations of human habitation, already have 'mites' with no Birds having anything to do with it.
Bird Mites are very unlikely to bother people, though it can happen.
The people who will be bitten by Bird Mites are deficient in B Vitamines and do not eat enough Garlic.
People who are not deficient in B Vitamines, and or who also eat enough Garlic, will not be bitten.
The Mites which normally live on Mice Dogs, Cats and so on, are a much more probable source of 'bites' or itching for people.
If you want people-Lice, just have your kids in any public school, ride a bus, go to a movie theater or any public buildings with couches or upholdstered seating, Taxi Cabs, etc.
Mites are tiny Spiders, adapted to live off of various things, and some species are 'biters'.
If there were a mite issue with the Birds on your Balcony, enough to be infesting your home, the Birds and their Babys would be roiling with them in ways which would be very visable to the casual glance.
Of all the thousands of people who have written in to this list, I recall only a couple times when anyone thought they had been bitten by a 'mite' even when their Birds definitely had them.
Personally, I have never seen any 'mite' issues with Pigeons, although 20 years ago I got in a youngster Sparrow who had them.
I simply cooled the Bird, and drew off the mites onto a little towell on a heating pad, and after a few rounds of that he did not have them anymore.
Best wishes!
Phil
l v