With the loss of Allethrin as an active in the United States, we help a lot of clients find and develop suitable replacement actives. With several new actives to choose from, the process of selecting the ideal choice and them optimizing them to your needs can be bit of maze at first. But we offer a wide range of methods to help you quickly finalize your finished product. Most allethrin replacement compounds are best suited for outdoor area-wide repellency which involves summer outdoor weather. But we offer a range of large scale indoor options to help speed up the screening and formulating process year around. Once the final rate and formula is selected we can then provide all the testing need for the final registration.