Avocado tree disease?

[ej11]

Hello, 3 avocado trees Im growing have develope some type of disease that I can't identify. Any help will be appreciated.

Attached pictures.

 

[Chuck]

I don't think it is a disease. I think it is either thrips or mites or both.

 

[Bur1994]

I think its mites, try spraying with bifenthrin

 

[AlexNillson89]

This does not seem like some kind of disease, sometimes it happens even when watering the avocado too often. And just as like he doesn't have enough light