It's not the product that I criticize, on the contrary I find it effective; but the packaging: if it sank into the carton as I mentioned, this is because one of the vials did not spray; when I wanted to use it I put myself right hand; he'll have to wait till I have finished the other for transferring .... except once emptied my boxes (I just moved) I found another bottle spray, but admit that it is not normal . I do not congratulate those who have made the shipment.