Theft of Lost or Abandoned Property in Florida
Finders Keepers, Losers Weepers - not in Florida.
In Florida, if a person finds lost or abandoned property they are required to report the finding to law enforcement. 
This law applies equally to obviously valuable items such as lap tops and electronic devices, as well as to less obviously valuable items such as hubcaps and bicycles.
The failure to report the finding of the lost or abandoned property to law enforcement, or return the property when asked, is considered theft.
Penalties for Theft of Lost or Abandoned Property
The penalties for the crime of Theft of Lost or Abandoned Property are determined by the value of the property found.
Petit Theft of Lost or Abandoned Property
Grand Theft of Lost or Abandoned Property
Defenses to Theft of Lost or Abandoned Property
Lawfully Claimed Property
Under Florida's Lost or Abandoned property statute, a person who finds lost or abandoned property must report it to law enforcement and deposit with law enforcement a reasonable sum sufficient to cover the agency's cost for transportation, storage, and publication of notice.
If this procedure is followed and no claim is made, the person is given rightful ownership of the property - even if the previous owner comes forward after the fact. 
Simply put, it is impossible to steal trash because Florida law only criminalizes the stealing of "property."
Property is defined as "anything of value" and the value is the "the market value of property at the time and place of the offense or, if such cannot be satisfactorily ascertained, the cost of replacement of the property within a reasonable time after the offense." 
Thus if someone places something by the road, it has become trash that presumably has no value.
It is a defense to the crime of Theft of Lost or Abandoned Property to abandon the attempt to commit the theft under circumstances indicating a complete and voluntary renunciation of the criminal purpose. 
While voluntary abandonment is a defense to the crime of Theft of Lost or Abandoned Property, involuntary abandonment is not a defense. The distinguishing characteristic between the two is the reason for abandoning the theft. 
A voluntary abandonment occurs when your conscious, unprompted by encountered circumstances, causes you to withdraw from the attempted theft.
On the other hand, an involuntary abandonment occurs when unanticipated circumstances (i.e. belief scheme discovered) causes a person to withdraw from the attempted theft.
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