"Andrew" wrote in message
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On 19/04/2021 00:32, ss wrote:
Previously used all sorts to kill moss & algae on back garden paving
slabs a couple of times a year.
Now wife has got a small terrier puppy so need to be careful what I uae.
Any recommendations for killing the moss/algae that is safe for dogs.
We can probably keep dog off the area for say 4 hours if necessary.

Swap him for a bitch. That will kill all the grass and moss.

Nope, only in small patches.