A unitary system of government, or unitary state, is a sovereign state governed as a single entity. The central government is supreme, and the administrative divisions exercise only powers that the central government has delegated to them.
So, preventing an infestation of ants or getting rid of ants is a matter of closing entry points, repelling them, and practicing daily routines of cleanliness. 1  Follow them. 2  Close gaps and/or apply natural repellents those entry ways.  Practice cleanliness and routine maintenance.
Herbs/Spices. If you don't have essential oils, you can sprinkle powdered cinnamon, clove, garlic, cayenne pepper, black pepper, salt, mint or bay leaves at entrance points. Soapy water. This is Brie at DIY Life's favorite way to get rid of ants. Fill a spray bottle with 2 tablespoons dish soap and 1/2 cup water. It kills ants and destroys the pheromone trail. It only works when wet, so you'll need to reapply for a few days.