Can you legally use a hidden tape recorder at someone elses house without there knowledge in the state of Iowa?

In Iowa, it is generally illegal to record a conversation without the consent of at least one party involved. This means that if you are at someone else's house, you cannot legally use a hidden tape recorder to record conversations without the knowledge and consent of those being recorded. Violating this law could lead to criminal charges and civil liabilities. Always consult with a legal professional for specific legal advice.