Originally Posted by harold
i would love to know this too, someone mentioned that greencure was nothing more but well marketed potassium carbonate?
That's true -- I believe it has a surfactant added in as well, but the active ingredient is potassium bicarbonate.
You can mix a sodium bicarbonate (common baking soda) solution up if you can't find potassium bicarbonate. It's said to be a bit less effective than the potassium, but not dramatically less effective (and certainly worthwhile if you don't have anything else):
3 teaspoons bicarb
1 and a 1/2 tablespoons vegetable oil
1/2 teaspoon dishwashing liquid (the dishwashing liquid helps disperse the oil into the water)
mix this with 1 gallon of water.
EDIT: Here's potassium bicarb for sale in U.K. via ebay. Seller seems to know it works on PM/fungal infections.