Jul 12, 2014 - 08:23 AM
Pyganic contains pyrethrum without PBO.
Avid contains Abamectin and is not pyrethrum. I have not personally used it, but have customers that report good results.
Azera is also a newer product that contains Azadiracthin and Pyrethrum. It also has reportedly good results.
Safari also gives good control and contain Dinotefuron.
There are a number of good products available to commercial growers for whitefly control. Click here for a link to our catalog search for Whitefly control products
The inexpensive over the counter products such as Neem, Soaps, etc, do not provide good control in my experience. We cannot grow Hibiscus in our backyard without using a commercially available product for Whiteflies.
Regardless of what you use, whitefly control in most situations is an ongoing process during the spring summer and fall. Use a good quality product, develop a consistent program and you will get satisfactory results.