Pet-friendly moss killer.....

[mint]

for use on patios, etc.

Any suggestions and also where to buy it?

Thanks.

[Tancrède]

Sulphate of iron, an ounce to two gallons of water, put on with a watering can.

Oh, and I meant to say :  put it on during the growing season.

And it's as cheap as chips. 

[mint]

OK, thanks, cheap as chips sounds as good as it gets.

However, now please assure me that it doesn't stain everything irridescent blue or fluorescent orange?

[Tancrède]

[quote user="sweet 17"]However, now please assure me that it doesn't stain everything irridescent blue or fluorescent orange?[/quote]

Oh yes, I can assure you that it doesn't do either of those things.  It is a pale green crystal (or powder) and when diluted is virtually colourless. 

It does give a slight smell of old anchors for a day or two  -  but living far inland I find that quite evocative.

You will rapidly see if it is working because the moss will turn black within hours.

[mint]

And I suppose you'd buy it at an agricultural coop perhaps?

[Tancrède]

[quote user="sweet 17"]And I suppose you'd buy it at an agricultural coop perhaps?[/quote]

Yes, an agricultural / gardening supplier would be sure to have it.

[mint]

Thank you. I'll ask a French friend who works at one of these places.