Dear Sri Rohitud,
Since you specifically asked us to comment on the subject matter, I am narrating my observations of 35 years on Horticulture crops with Neem oil, Neem oil 10,000 ppm and Neem oil 50,000 ppm of Azhadirictin content.
From past couple of decades ,I am using neem oil, mix of 3 to 5 ml per ltr water, and from a decade I am using Neem oil with 10,000 ppm Azhadirictin content, mix 1 ml per ltr water, and from past 5 years , using Neem oil with 50,000ppm azhadirictin content, mix 0.3 ml per ltr water. In this we mix 0.5 ml Binder/Spreader also, per ltr water.
As per the gathered information from Horticulture/Agriculture authorities and as per the many years of my experience, it is gathered that Azhadirictin in the Neem oil has a great control on Syst of the Insects, either making them partial or full disablement, while hatching process, and will become use less. Up to gathered information and my post spray observations, reveals that Azhadirictin in neem oil, can not kill any Adult Insects. It can act as a repellant only.
A Cocktail of Neem Oil + Aloe Vera Gel + White Vinegar + Kerosene , is not used by me till now and when need comes, i will use it.
Not only by gathered information, on my practical experience also, it is observed that the Queen Termite House in the colony, will be at a very depth. It is learnt that, its quarter will be at so depth because, the Queen Termite need More warmness, humidity and also safety precautions. You may be aware that each queen Termite can produce around 15,00,00,000 nos ( 15 crore ) termites in its life time of 15 years. More or less , it is a Sist producing factory.
That is the reason, it is a fact that the termites can be eradicated or removed from our land, only if the queen Termite is killed or shifted.
I have a practical knowledge with Metarhizium anisopliae, parasite fungus Microorganism, and if it is introduced in to the Termite colony, it enters in to the skin, of the queen termite and all the colony termites, and all they will be ruined in stipulated coarse of action, as all the termites will be in contact with each other and also with the queen TERMITE.
You pl speak to Dr Venkatesh sir of Agrilife, Hyderabad or any other Organic Horticulture professors of GKVK, Bengaluru, on request Sri Dr Devkumar, Msc ag, PHD, and or sri Dr MS Rao,Msc ag, PHD of IIHR,Hesarghatta, bengaluru or any other Authorities in the field of Bio pesticides.
Here as I said earlier, it is to be noted that either combination of neem oil with others or soapy water or else, all they act on contact only and the Queen Termite will be at a very deep and until unless it dies/shifted, the termite colony will not be removed.
These are my observations and practical study beliefs. It may Please be verified and can be put into action, if found correct only.
with best wishes, g.p.rao, farmer