There are many different bugs that make it into your home, some of them more damaging than others. Ants are the most common bugs that you will find, but they are not the most damaging ones. Ants are easily attracted by sweet things, such as sugar, honey and soda. This means that if you do have a problem with ants, it is important that you keep them closed up in sealed containers. If you have soda cans that you put in your recycling, that could attract ants, as well, so keep your recycling closed up.
Usually, you will be able to find the source of the ants by backtracking along their trails.
Ant bait can be placed next to the trail to stop them from making it into your home, or you could consult with an exterminator.
Most ants are just a nuisance, but there are some breeds that can damage your wiring by chewing on it, or even chewing through the wood in your walls.