Leeches are great at helping resolve boils, carbuncles and skin problems alike. They painlessly open the boil allowing pus to come out without any surgery. Leeches quickly relieve congestion, reduce swelling and pressure which is causing pain. Leech saliva contains anti-bacterial enzymes to help clean and disinfect the wound, painkilling enzymes and most-importantly anti-inflammatory (bdelins, bradykinins and eglins). As the result, the boil or carbuncle quickly starts to resolve.