Update:
At the time of the previous discussion on 'flies' we took the bull by the horns.
Plant and pot taken outside and all old (fly ridden) potting scraped off using a screwdriver around the roots, and dumped into a bin bag. The roots were well washed down using the hose and the plant repotted in fresh potting. The pot was also washed out well.
I kept it outdoors for several days to check for any sign of flies.
The porch was scrubbed out and sprayed several times over several days. A few flies appeared for a couple of days, not many. I kept washing and spraying until there had been no sight of the wee blighters for a few days.
The plant was then returned to the porch and I'm happy to say that plant and porch (checked every morning) remain 'fly free'.
Another assassination attempt on Donald Trump
The main room in your house...
