That's really to bad. I use it on my plants and also on my dogs (mixed with tea tree oil) as a flea deterrent.

I'm sure you can buy it online if the other doesn't work for you.

Jeez, that sucks. I am in Ontario too and I was planning to go to the nursery tomorrow to buy Neem oil , because some small green caterpillars are eating my rose bush and insecticidal soap does not help.
Also, last year I had June beetles infestation on my red oaks - and insecticidal soap was useless on them too.
It seems like that only insects it kills are aphidsâ¦.

Out of curiosity, why has it been removed?

Apparently Neem Oil was never officially registered as a pesticide in Canada.

Someone at the local garden centre suggested I ask owners of organic farms for some neem oil. However, you can find it as a skincare product.

There are links in the link below to two online suppliers in Canada. One company has a minimum order amount and the other sells it in large quantities.

Here is a link that might be useful: Neem Oil in Canada