Rich, since you are asking about a product manufactured by a company that produces numerous options, I need you to tell me the exact name of the particular one you've been considering.

Pyrethrins, while a natural pesticide is a very broad spectrum poison that will kill off any of the predators of
Cucumber Beetles as well as the pests.
Surround, a Kaolin clay that coats the plant leaves, seems to offer a good deal of protection.
It does not kill off the beetles but disguises the plant so they do not land on it. There are a number of other steps to take that the article linked may be of some help with.

Here is a link that might be useful: Control of Cucumber Beetles

The specific product is Saferî Tomato and Vegetable Insect Killer

Thanks for the link sounds like I needed to use kaolin clay earlier in the season but they recommend pyrethrins as a last resort when the beetles feeding on the pollen which they are.