"Keith Corwell" wrote in message
...
Thanks for the replies
another question does stuff like round up and bug spray
go bad

If you read the round up packs I think it states to use a product mixed from
concentrate after such and such a time. Read the labeling however. I use
mixed round up that is several weeks old as a spot spray occasionly, it
still does the job ok. If the concentrate is only a year to 2 old and stored
under normal conditions it will work ok.

rob