To dream of an infestation of some form represents feeling about a problem or annoyance that you are unable to control. Feeling about a problem or annoyance that you can’t get away from because it’s affects too seriously. A developing problem that is now constant. A severe problem. A severe problem that you can’t control after first believing it wasn’t too serious.
Feeling about some area of your life being untidy, out of control, dirty, tarnished, or of low quality. Feeling that some problematic area of your life is excessive. Neglect that has allowed a small problem to become a big problem. A lack of motivation to deal with a problem that has gotten out of control.
Example: A man dreamed of seeing a rotting bug infested body. In waking life he was beginning to feel annoyed by his alcohol problem and impossible it felt to attempt to control it. He felt his alcohol addiction had become a severe problem after first believing he could control it.
Example 2: A young man dreamed of his home being infested with rats. In waking life he was embarrassed by how untidy his home was when a friend came to visit.