All of these people have no idea what they are telling you to do.
Ants come in houses in LINE looking for food and a temporary place to stay. Unfortunately, they get in your way.
If you destroy their chemical line, (a smell that ants use to follow back and forth) then the ants will loose the connection of going to where they are going. If the ants scattered all over your bed, then it is Sweet spills dried on your bed. Possibly food crumbles too. Try washing your bed covers, blankets and etc.
If your ants form a line, Remove your furniture and stuff. Then try to follow there they came from. Usually they come through cracks and holes. Find it, and use HOT GLUE, or SILICONE, or Chalk pudding and BLOCK the hole or cracks.
By eliminating their chemical tracks, Blend garlics mixed with water and use the juice to clean the path. Then use normal cleaners to clean the area.