If 5 oz of concentrate is needed for a gallon, how much would be needed for a ½ gallon?

To determine the amount of concentrate needed for a half gallon, it's helpful to break it down step by step. Since 5 ounces of concentrate is required for a full gallon, this means that the concentrate ratio is essentially 5 ounces per 128 ounces (because one gallon equals 128 ounces).

When calculating for half a gallon, one needs to consider that a half gallon is 64 ounces (which is half of 128 ounces). Therefore, to find out how much concentrate is needed for 64 ounces, you can scale down the requirement proportionally.

To figure this out, you take the 5 ounces required for a whole gallon and divide it by 2 (since half a gallon is half of a gallon). This results in 2.5 ounces of concentrate required for 64 ounces (or half a gallon).

Thus, the correct answer is that 2.5 ounces of concentrate are needed for the half gallon, aligning perfectly with the requirement established for a full gallon. This calculation not only reinforces the understanding of proportions but also emphasizes the importance of accurate measurement in pest control applications.