Humberside Police said recording incidents of lost property was taking taking up a lot of officers' time and there was a very low success rate of finding items and reuniting them with their owner.
"The change to lost property will provide a more efficient system and aid in reducing demand, enabling forces to focus police time on areas that are more appropriate."
The public are advised to report any lost property for free through www.mylostbox.co.uk and for lost pedal cycles via www.bikeregister.com. Lost property can also be reported at www.reportmyloss.com for a small fee, however a reference number will be provided for insurance purposes if needed.
Found property will continue to be accepted and recorded by police, but will only include the following items:
Items capable of containing data e.g. mobile phones, computers, tablets.
Cash within wallets that are identifiable.
Cash – no owner identified
Firearms and ammunition
Personal documentation such as benefit books and cheque books
Birth, marriage and death certificates
The force said: "We would always advise to register your property, www.immobilise.com is a free service that allows you to register your items, and should they be lost or stolen, greatly enhances the chances of your being returned to you if it is lost or stolen."