I have done google for a seeds store that sells BioNeem insecticide with no luck.If someone knows that would they please let me know?
Not sure if what you are looking for is brick & mortar or website, but I got a lot of hits. Since you are seeking a particular brand name, you might start with the manufacturer (Safer).
You might also find more options (and more brands) searching for "neem oil". I have seen neem products offered in several seed catalogs & mail-order garden stores.
I normally dislike using links to search engines, but I think you will find your answer here:
Here is a link that might be useful: Bioneem