Posted: 23/02/2017 at 21:21
Same advice re changing both compost and plants and keeping well watered but you can also use a deterrent.
Mix one small bottle of essential oil of cloves (pharmacy or health shop) into 5 litres of water and use that to water your planters. The ants hate the smell and move on or stay away. Do it once a month as part of your normal watering routine and that should solve the ant problem.
It works in the garden too should you find ants nesting there. Unfortunately their tunnel systems leave plant roots hanging in thin air which means they can't provide water and nutrients as they should and the plants weaken and either struggle or die.