"Pete E. Kruzer" wrote in

m:

But if I bought it in a spray bottle for a couple bucks less, I
could use it, store it, use it, store it, until it was used up.
Why can the bought 'mixed' Sevin be stored, but the Sevin you mix
yourself can't be???

because the dry Sevin doesn't have the same binder/preservative
additional chemicals that the premixed does, therefore it breaks down
in storage faster.
the idea behind buying the mix-your-own is to save money on the not
needed extra crap in the premixed. if you can't do the maths to use
the dry, then maybe you should return it & get the premix.
personally, i find hand picking Japanese beetles to be more
successful than using the sprays anyway, & i have more than 8 roses,
plus a small hops yard... Japanese beetles *love* hops. and unless
you *and* all your neighbors treat for the larvae (grubs) of the
Japanese beetles, all the Sevin in the store won't help your plants.
lee