Infestation
From WikiPets
An infestation is the presence of a large number of pest organisms in a given area such as on the surface of a host e.g. an infestation of fleas on a dog, with the dog playing host.
An infestation is the presence of a large number of pest organisms in a given area such as on the surface of a host e.g. an infestation of fleas on a dog, with the dog playing host.