Do powders loose their "goodness"

DCG

Well-Known Member
How long can you keep powders for once the container has been opened.
I have a tub of Varget that must have been opened now for aprox 2 years, will it have lost its "goodness" ?
 
This particular tub has been stored in a well sealed container in the cool. The reason I ask the question is that it smells quite pungent when you take the top off, which I suppose is the nitro, could be just me as I am more used to Vithavouri powders
 
varget is an extreme powder,no change in its performance from something like -20 to 50 celcius i read somewhere,am sure it will be perfect,varget has a nice smell
 
To answer the question: What Kevin said. If kept in a cool, dry place with the lid on, it will last for decades. I have some 40 year old H 4831 I'm still using.~Muir
 
Agreed, any hint of an ammonia smell, and the powder has begun to go south. It should be relegated to fertilizer at that point...(it does green up the lawn quite well BTW).
 
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