I've had a chat with the Provacan people and they said that they are temporally going over to droppers because they have made their product even more wide spectrum and it is too thick for the spray nozzle.
They will be returning to spray nozzles in the very near future when they sort the problem out.
Meanwhile they say that about three drops will give the desired 6mg dose with the Provacan Daily 500mg product..
Waving.
Kevin