Basically the title. I need to buy Neem and considering between Dyna-Gro pure cold pressed Neem oil and Garden Safe Neem oil which is at 70% but still needs further dilution.
I assume if using Dyna-Gro I might need to add a bit of surfactant to the solution to maintain the emulsion when diluting. Garden Safe on the other hand already contains (probably) the surfactant but might have other ingredients and I am not sure how save those are on sensitive plants such as Cephalotus and Drosera (will loose dew no matter what).
What are your experiences? If you went with pure Neem oil what did you use as surfactant (dish soap)?