Silicone ear plugs are safe when used as instructed. Keep away from infants. If swallowed, the plugs are non-toxic, but may interfere with breathing if caught in windpipes. Do not spread silicone plugs too thin. Avoid contact with hair nad oil based lotions.
If you push a silicone ear plug into your ear canal, do not try to remove it yourself. Do not use tweezers, cottonswabs or other devices as these may push the plug further into the ear canal. See an Ear Nose and Throat (ENT) physician as they have the proper instruments and skill to remove the plug safely.
Best hearing protector I have used. Simple, fast, and they stay put. Have used foam, and custom molded and these are great. If it's too loud just push and remold to your ear a little more.