Found an excellent link to how neem works as an insecticide. http://www.discoverneem.com/neem-oil-insecticide.html According to this article, you do not get instant kill, rather a slower effect over time. So I guess seeing live adults 36 hours after application is nothing to get excited about. I just ordered 150 lady bugs to put in the tent. After seeing what the neem did to my buds, I want to try to avoid another application. Also, while researching neem, I read that you are not suppose to use spinosad during flowering. So I am going to try and let the lady bugs keep things under control.
HM-- My understanding is that neither neem/Azamax nor spinosad are instant killers, but both should sicken them quickly and stop their feeding... they need to be contacted with the solution well enough when sprayed to be dosed lethally-- a real challenge when dealing with a plant like this! So many potential places to find even partial shielding, especially on a budding plant,...think of this at their scale, and you can see how this could be, even if it seems you've all but immersed the plant in the stuff! 
... this is one reason why repeated dosing is called for, and better still, alternating products to cover possible resistance to the product as well... recall too, that adults can fly! ..their bodies are not as tender and vulnerable as larvae either,... The pistils are pretty fragile, and neem does have surfactant properties; too strong of a solution can burn even the leaves...Azamax is derived from neem, and doesn't have the fatty oils that raw neem has, so it seems a bit gentler... neem oil can mess with growth hormones, feeding responses, and can clog breathing pores too.... Spinosad is derived from a bacterium, and acts as a neurotoxin; where did you read that it's bad to use during flowering? I'm interested, as I've not heard this yet, and have an open mind-- I have used it during flowering, mildly, not heavily though... I grow outside, so thrips are automatic for me!
keep the fight up mate, you're doing what you should be doing! 
great find brudda! ...the warning given there is about protecting beneficial insects from the spinosad.... Very cool! I didn't know Spinosad could penetrate the cuticle layer into the tissues beneath, where they vermins want to tap into.. 
-- it's like a "shallow systemic", and will dose them if they feed on treated areas, and nail embedded eggs! So, if it lasts about a week, then you can stop dosing around the time you go into cleansing period before harvest,... hopefully, you won't have to grind that hard and long on treatments! Both the mentioned products can be found at Home Depot and other common garden centers,.. HM are you close to one of these, or is that why you had to order online? ..... 
