hi
this products are produced by Farmec SA from romania and distribuited in us and canada by aslaskin . com (the only authorized distribuitor by the farmec company).
I don’t dare saying that other products don’t work. It surely wouldn’t be fair. However, based on my experience and that of all the people who tried these products, I can tell you that the natural products Aslaskin uses are more than effective. It doesn’t heart to give it a look.