The nests will be sporadically built throughout your lawn or garden, but will typically be in the driest areas and/or under longer grass/weeds or under growing flowers. GDWs do not like, but can live in, moist soil.
Do not aggravate them. Do not push or poke them, do not walk on them and do not attack them with anything. Ignore them for two months. Just let them be as they dig up cicadas to feed their children. After two months, they’ll be off. Don’t wander around with bare feet at night. Be sensible about walking in your garden; no yard is completely safe from prickles, stings and unpleasant things, so wear appropriate protection and practice sensible use of your yard.