For a heavy infestation of fleas, how many ounces of concentrate should you add to fill a 2-gallon sprayer?

To determine the correct amount of concentrate to add to a 2-gallon sprayer for a heavy infestation of fleas, we first need to convert the volume of the sprayer from gallons to ounces, as most concentrate measurements are given in ounces.

Since 1 gallon is equivalent to 128 ounces, a 2-gallon sprayer holds:

2 gallons × 128 ounces/gallon = 256 ounces.

If the recommended concentration for treating a heavy flea infestation is indicated as a specific ratio per gallon (for example, a certain number of ounces per gallon), this would guide how much concentrate to use in total for 2 gallons.

When examining the provided answer choices, it becomes clear that 0.66 ounces of concentrate per gallon would require:

0.66 ounces/gallon × 2 gallons = 1.32 ounces.

Therefore, for a heavy infestation and when calculating based on the common treatment ratio, using 1.32 ounces of concentrate would be appropriate for the full 2 gallons, making this the correct choice. This concentration effectively ensures that the treatment is potent enough to handle the high flea population effectively.