Persistent nodular scabies may need to be treated with injections of steroids into the nodules or (rarely) with coal tar products applied to the skin. All family members and close contacts should be treated.
What instantly kills scabies?
Permethrin is a topical cream that contains chemicals that kill scabies mites and their eggs.
What can I spray on my mattress to kill scabies?
Permethrin spray is a liquid solution that's used to disinfect surfaces that can't be washed. Permethrin is an insecticide that's used to kill scabies mites.