Can pesticides kill grapes' benefits?

Zihua: Careful shopper lets guard down because there were no more Mexican grapes. A second bag was bought in haste to her regret...Product of USA, 4023...anything starting with 4 means it's been sprayed with pesticides. A number starting with 9 is apparently organic. The taste left a burning sensation in her mouth. The other time she succumbed to big supermarket grapes, she saw huge holes in each grape...injection holes? WTF.

BREEZE'S BELIEVE IT OR NOT'S