Rats can transmit disease to humans, but with a clean home
and good hygiene the risk is very low.
The occasional rodent
visitor is no reason to call in the exterminators. Nor is it a reason to get
out the poison, glue traps and snap-traps: these are inhumane and/or toxic
options that cause painful deaths and may also harm wildlife and children. Instead, use
preventative measure to make your home unappealing to rats (many of these tips
will help deter insect pests too). For example, remove clutter, food and water
sources, and seal gaps that act as entry points. Peppermint, garlic and cayenne
pepper are reputed non-toxic deterrents.
more info and tips:
See Rats alive!