This question was posted in the criminal defense forum. Unless you had extremely valuable lawn furniture, you likely have a small claims action in small claims court. Conversion is the name of a cause of action for taking the property of another and using without legal authority. The police, right or wrong, are likely to view the matter as a civil rather a criminal matter.
This is the THIRD posting of this question by the same person. Please see above and/or prior responses.
The opinions rendered herein are based on general principles of law. Laws vary from jurisdiction to jurisdiction and there are often numerous factors which can render advice or an opinion inapplicable. You should NOT make any decisions about the handling of a legal matter without first directly consulting with an attorney about the particulars of your case.
Conversion is the unauthorized ownership over the property of another to change the property's condition or in exclusion of the owner's right to it. It is also any type of conduct that deprives the owner of the property. Embezzlement is often associated with conversion in a criminal context. If someone takes another person's property and refuses to give it back.