What does "It does have a 7-14 days to harvest" mean relative to applying this product to my vegetable garden?

The days to harvest is the time you should wait following the treatment of a fruit, vegetables or other edible plants or crops before you harvest any part that was treated. So if you treated a tomato plant and the product used has a "7 days to harvest" listed on the label, you would need to wait at least 7 days after the treatment to insure the product applied has dissipated or broken down enough so that the plant can be safely eaten. Many products like Permethrin found in VEGETABLES PLUS will have a range of 7-14 days to harvest listed.

More on what does days to harvest mean