re: Prodiamine shelf life?

I bought the same thing and split with a friend for this reason. When doing my research, others have said that it’s still effective 7 years later.

Of course this is hard to gauge as it’s not 100% effective to begin with. I’d still use if I were you, not sure if using more than the label calls for would be beneficial or harmful though in case it’s lost some potency. Others on here may know more.