Mosquitoes
Which Product To Buy?
Many cities and towns are using products containing permethrin for their mosquito control programs. This is a good choice for both control effectiveness and cost. There are three (3) suppliers of permethrin products for mosquito control and all their products are equally effective when used as directed. There are a number of different concentrations of permethrin offered by these suppliers and comparing price can be confusing. There is an easy way to compare prices - so let's learn how.
Consider the following four (4) products (prices are not current):
| KILLSEM 31-66 | |
| Active Ingredients | Bid price - $240/gallon |
| Permethrin | 31% |
| PBO | 66% |
| Inert Ingredients | 3% |
| 100% | |
This product contains 2.86 pounds of Permethrin per gallon.
| KILLSEM 30-30 | |
| Active Ingredients | Bid price - $214/gallon |
| Permethrin | 30% |
| PBO | 30% |
| Inert Ingredients | 40% |
| 100% | |
This product contains 2.52 pounds of Permethrin per gallon.
| KILLSEM 12-60 | |
| Active Ingredients | Bid price - $90/gallon |
| Permethrin | 12% |
| PBO | 60% |
| Inert Ingredients | 28% |
| 100% | |
This product contains 1.0 pound of Permethrin per gallon.
| KILLSEM 4-4 | |
| Active Ingredients | Bid price - $33/gallon |
| Permethrin | 4% |
| PBO | 4% |
| Inert Ingredients | 92% |
| 100% | |
This product contains 0.3 pounds of Permethrin per gallon.
The above imaginary labels have the same information you will find on the front panel of all permethrin products you see. Since we want to purchase permethrin at the best price, lets compare the cost of the permethrin regardless of the concentration:
"KILLSEM 31-66" contains 2.86 pounds/gallon of permethrin and costs $240/gallon or, $83.92/pound of permethrin (240 ˜ 2.86).
"KILLSEM 30-30" contains 2.52 pounds/gallon of permethrin and costs $214/gallon or, $84.92/pound of pemethrin (214 ΒΈ 2.52).
"KILLSEM 12-60" contains 1.0 pound/gallon of permethrin and costs $90/gallon or, $90/pound of permethrin (90 ˜ 1).
"KILLSEM 4-4" contains 0.3 pounds/gallon of permethrin and costs $33/gallon or $110/pound of permethrin (33 ˜ 0.3).
You can see from the above that the "KILLSEM 31-66" is the most economical product. Most of the time, BUT NOT ALWAYS, the most concentrated product is the best buy.
Although the above products and prices are imaginary, the method works well when competing products have to be compared. This method can help you greatly when you are sorting through bids for several different permethrin products from suppliers.
