Have been soaking the bite with distilled white vinegar immediately after and presto! no more itching.
Tested it this whole past week and so far so good...
Have been working outside a lot lately, and the mosquitos are out in droves right now.
(have also heard that they don't like mint, but have not tested it yet. Just bought the mint plants and seeds to plant around our backyard and the essential oil to heat in an oil burner [or to dab on]. Will post once I test that theory!)