And so sorry this really does suck...If its splitting from the pineconning its time. IMO. The easiest Ive found and most humane is the toothache medicine (clove oil) Eugenol. The little bottle with red cross and the cotton dabbers from the pharmacy. One drop in some tank water, mix it up and they knock out in seconds, add some alcohol and wait awhile. Most humane way Ive found.