Pest like ants enter your home looking for food and water. In the first photo you'll see food that was left in a bin which attracted ants.
Always put a plastic in your bins that you can remove when needed so that you can prevent activity from entering your home.
Simple and effective....
Not sure if you have termite activity in your home? This muddy type of soil indicate termite activity.
Remember termites will destroy anything wood in your property. They can even end up in the roof rafters. Eradicating the activity is much cheaper than replacing all wooden structures.