To see the vermin in a dream denotes to problems and illness. There is a possibility that you will get to meet many despairs and frustrations.
Dream dictionary: Vermin dream meanings
(zool. Game | Graveyard) A vermin or any bird that kills game or dwells near the graveyards in a dream represents a procurer or a prostitute.
…Vermin crawling in your dreams, signifies sickness and much trouble. If you succeed in ridding yourself of them, you will be fairly successful, but otherwise death may come to you, or your relatives. See Locust….
…To dream of any kind of vermin, is ominous of ill-luck and enemies, especially if they are in the house, or near the fireplace; but if out of the house, they are unimportant. Lucky lottery dream numbers – 27, 62….
Riches, money of other profit.
To dream of flies or other vermin, denotes enemies of all sorts.
(Egg | Louse | Vermin) In a dream, lice eggs represent contemptible people. If one sees them and could not remove them in the dream, it means that contemptible people will pursue his wife, and he will fail to persecute them or even avoid them. (Also see Lice)