Photographers in Germany will find good, cheap stuff here: http://www.hobby-photo.de. I purchased 2 kilos before I visited south asia during monsoon. Put lenses and camera together with a handful of silikagel in a sock into a plastic bag and close it. Don't forget to dry the silicagel in an oven after a while. The better silicagel products show that they need to be dried by changing their colour.