Clean All Surfaces Thoroughly: Because sand fleas like to burrow in things, they are attracted to clothes, linens, carpets, and other textiles. They will also hide in cracks and crevices before attaching themselves to you or your pets.
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The adult female sand flea burrows into the skin and grows 2000 times in size as eggs develop. The female flea typically lives for 4–6 weeks, during which the eggs are expelled and fall to the ground.
Sand flea bites. Sometimes, not always, the female sand flea lays her eggs underneath the skin; the large welts will have a black dot in the center. If that happens, you should seek medical attention because the black dot indicates eggs have been laid.