If you are using is assisting you with key making, key cutting, rekey, new lock installation. You need to make sure that they hand over any spare key copies they might have, to you, before they leave your place.
If the company keeps records of past jobs, find out what records and copies they keep and if these are kept in a secure environment. When using a Locksmith Gulph for the first time you should always make sure that they are legally licensed, bonded and insured.
In many cases this is easier said than done. If you live in a large city how you do know which Locksmith Gulph Company to go with.
Sometimes it helps to ask around maybe a friend or relative has used a Locksmith Gulph company that they could recommend. Or if you need a Locksmith Gulph for your commercial property ask another business if they recommend a certain Locksmith Gulph company.
It also pays to check with the local police to see if any complaints have been issued against a particular Locksmith Gulph service.
Even if you get a recommendation about a Emergency Locksmith Gulph service from a relative interstate most of the time this is OK as most Locksmith Gulph companies have branches in a number of different states.