The Riddex pest repeller produces high-frequency sound waves that are harmless to humans and pets (except rodents), but which are heard by insects and rodents and are supposed to drive them...
No. It can only make the animal suffer. This devise gives off an electrical pulse that these small animals may be able to feel. Read the label on this product before using around the guinea pig.
They don't. If they do, results will only be short term. Just a question you are giving this person an answer and you tell them in no uncertain terms "they don't." but then follow up with 'If they...