@Jacquelini0 I don't know how your local waste disposal system works, but if the extra garbage has cost you a specific fee, you can consider using airbnb.com/resolutions to request that the guest pay this fee.
I would strongly discourage you from calling it a "fine" for two reasons. First, Airbnb will not enforce a fine on your behalf. And secondly, the way you verbally approach a request for compensation can have a major impact on the results, and I doubt this is an amount that is worth starting a dispute and taking a retaliatory review over. Perhaps if you present your disposal of the trash as an "additional service," and ideally have a receipt or some documentation of what it cost you, the guest may calmly agree to it. Once you use the F-word, they'll feel reprimanded and go directly into defensive mode.