Rats and mice are a serious hygiene problem and wherever they appear, there is a risk of contamination and even disease transmission.
   Rats can transmit up to 120 infectious diseases, which they spread via fleas, faeces, urine or bites. The best-known diseases include
- the hantavirus (high fever, kidney failure)
 - cholera or
 - typhoid fever.
 
Decisive for the prevention or control of harmful rodents is appropriate farm hygiene, namely
- Thorough barn cleaning several times a year, depending on infestation and occurrence.
 - Identify and eliminate possible entry points.
 - Consistently protect, remove and make inaccessible possible sources of food and feed that may attract rodents.