Hi everyone - I am very much a DIY novice. Parts of my house are tiled (hallway, kitchen, bathroom). The grout is deteriorating or just now completely gone where it meets the skirting.
I have recently had a lot of ants and the pest control guy did a spray yesterday and suggested that the gaps are an entry point. The first picture is of the tile as it meets the wall/skirting of an internal wall in the kitchen. The second picture is my front way in the entryway.
How do I go about filling/sealing the gaps around the house to prevent ants/bugs?
Thanks in advance.

