I lost two domes inside my ear canals within a week after pushing the wires in as far as they would go, then rather casually pulling them out. The domes had been on the receivers for a while and may have loosened up or been a bit sticky in the canals from earwax. I am now doing a better job of keeping them clean, replacing with new ones, and making sure they are firmly attached before insertion. I would suggest being careful not to insert them too deeply and then yanking them out by the wires or you may be going to urgent care to get the tips removed.