Posted: 05/06/2015 at 22:50
@blighty mam I did start out by putting ant powder around the slabs near our back door, especially in the corners. But recently noticed ants crawling over the petals of flowers, so puffed some ant powder on the surface of the compost.
I had a problem last year with an ants nest in a large terracotta pot on a patio, they were so bad that I decided to take the acer out of the pot and put it into the soil instead of the pot. The ants moved or died off after puffing powder into the base of the empty pot. Powder usually does the trick, but this lot must be hiding under the soil in the pot and then coming out later on I'll put some more powder under the base of the pot tomorrow.
Thanks for everyone for your advice.