Noise Detection Technology - Preventing Airbnb Parties

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Has anyone bought a noise detection device for your airbnb? I had a bad guest this past month after a year hosting and I am thinking of getting a noise detection device. 
I thought they would just be plug in and go but I only see two big ones on the market which are Noise Aware and Minut. They seem expensive and a subscription service. Does anyone have experience with these or know about another way to prevent airbnb parties/loud noise? The guests had loud music and were shooting guns which woke up multiple neighbors. 

Thanks!