Do you change lock boxes after each repair job?

[Jake Wakefield]

I have some long term rentals here in Philadelphia and I had my handyman install lockboxes outside all the properties. Each one has a code to access a key to open the house.

The tenants do not know the code but we give out the code to workmen who come to work on the property.

My question is: If you have a lockbox, do you change the code after each workman who comes and works on the property?

Thank you.