Two months ago I bought some Toque Black Rappee, an excellent snuff. The stuff was so strong I had to use it only to beef up their Otto Smaltzer, another excellent snuff with a little Black Rappee. Two or three months later the nicotine is so reduced its just another mild snuff. Is there some way to maintain nicotine content? All my snuffs are kept with electrical tape sealing the container. Would keeping them in a freezer help? Anyone have any success in preserving nicotine?