My Magic Healer works wonders for me. It is more expensive than some products, but it lasts for a very long time. Helps with the itchiness and promotes quicker healing. It is safe on large open wounds, it wont hurt you if it gets inside a wound. If the sores are not open, you can also try Vicks vaporub. It helps the pain/itchiness because of the camphor and the menthol. But DO NOT put vaporub on an open sore that has a crater/hole in it, or is actively draining. If there is a chance of bacterial/fungal components that are increasing the itchiness, Hibiclens (chlorhexidine) is cheap and will kill/prevent anything that is growing on the sores.