Roker

agreed, breaking the law is bad

I use ordinary drawing chalk. You don't need much, just get some sticks from the stationers and crush up what you need. Also you can use egg shell, it's a bit of a pain though.

try here http://fsre.nl/home/

It is a fungicide, mycelium is fungus. If you have more than a trace of colloidal silver it will kill your mycelium. The only way you could get any growth in the presence of colloidal silver is if it was a bad batch. They put this stuff in paint to stop mold and use it on the space station to prevent mold and bacteria in the water recycling system.

You do realise that colloidal silver is also a fungicide. Probably not the best thing to put in a substrate. I use it to keep things from going off in the fridge, it's also great for athletes foot and ringworm (both fungal infections)

I had the same problem a while ago with a cat that had been weened to early (don't know how to shit and bury) and a neighbours dog and tried chilli powder, black pepper, bamboo stakes and amonia. Powder pepper and amonia all get washed away after a decent rain. Amonia is effective but only if it is in a dry spot. Then I tried the water bottle trick (another failure). But (a bit of synchronicity kicked in) I was watching a "lifestyle" programme and they had a pet psychologist on the show - his advice (and it is the only thing I have found that works) is to put some cat food (I used the dried stuff) where the little bastards are shitting and as the song goes "don't shit where you eat" they stop shitting where there is food! this works inside and out if you are house training pets. Animals won't respond to verbal or physical dicipline but they are guarranteed to respond to this. good luck