Yep, I got this problem. Just had a huge infestation on my ficus. Bifen did not phase them.

I just blasted them with Neem oil and that actually worked. I am also applying imidachloprid with a soil drench.

I also ordered some Forbid 4F, but I have not used it yet. You can only use it 3 times per year, but apparently whitefly has not developed a resistance to it.

I am going to do one more Neem oil soak this weekend and see what happens. If I still see any whitefly the Forbid is next.

 

@ser Ventigra!

 

Just read the label on Ventigra looks like some pretty strong stuff with a lot of warnings. Was about to buy it, but noticed it is not recommended for ficus. Oh well I will stick to my original plan.

 

….Any suggestions for what to try next?

Acephate.

Anything survives Acephate you want to hop on a rocket and move to another planet.

Seriously ….

https://www.domyown.com/acephate-97up-insecticide-p-2751.html?msclkid=971e2865dc1417f001124b725aa90659&utm_source=bing&utm_medium=cpc&utm_campaign=(ROI)%20Shopping%20-%20Professional%20Pest%20Control&utm_term=4580428009704619&utm_content=Professional%20Pest%20(Non%20Best%20Sellers)

Label ("whitefly" appears at least 10 times :twisted: ): https://www.domyown.com/msds/acephate_97up_label.pdf

 

And another strike for me, Acephate indicates a toxicity to ficus.