Certain type of Botflies can occasionally use humans as the host to its larvae. The
larva, because of their spines, can pose an extremely painful sub-epidermal condition. Removal processes include placing raw meat on to the area, which in theory will coax the larva out. Another option is to use the tree sap of the
matatorsalo, found in Costa Rica, which will kill the larva, yet leave its body in the skin. Additionally, one can attempt to seal the breathing hole of the larva with
nail polish or
vaseline and then, after a day, squeeze out the suffocated, dead larva.
[6][7]. Use of
adhesive tape can work, but carries additional risk of infection because portions of the larva's breathing tube can be broken off by the tape and made difficult to remove.