On 25 Jun, 16:21, Mogga wrote:
My BF's mum pointed out some big gaps in the mortar on her porch and
claims the snails are eating it.

Do they?
And what's the cure?
--http://www.orderonlinepickupinstore.co.uk
Ah fetch it yourself if you can't wait for deliveryhttp://www.freedeliveryuk.co.uk
Or get it delivered for free

Scatter some salt around the area.
Should keep the snails away.

Mark.