Ant calls in St Albans peak after spring rain and again in the February heat, when the colonies under the paving, the garden beds and the slab edge head for the kitchen tap and the pet bowl. Argentine ants are the big problem in the unit blocks and townhouse rows, running as one connected colony across several properties, and they cannot be dealt with by spraying one trail. Black ants and coastal browns nest under the slabs and in the mulch against the walls.
We identify the species first because the baits differ, then place gel and granular baits the workers carry back to the queens. Outside we treat the slab edge, the paving joints, the garden borders and the mulch against the house. Bigger infestations get a return check after a fortnight. We also point out the simple things that keep them out, like fixing a dripping outdoor tap and moving the compost off the slab.
