Try to anticipate other potential avoidable situations with a follow up inspection to assess the Locksmith’s work and ask your tenant(s) if you can also use the time to assess for other issues such as unchanged HVAC filters, leaky pipes, working shutoff valves, working smoke detector batteries, properly working downspouts, clogged dryer vents, evidence of water damage from leaking roof, etc,etc,etc.

Smoke detectors are two screws and a batteryScreen door could be tricky depends on if screen just needs repaired or replaced. 

It's a good idea to schedule your own safety inspections, including checking for smoke detectors and carbon monoxide alarms.3.

Such as unplugging smoke detectors, flushing things down toilet not meant for the toilet, etc...

Compliance items such as adding smoke detectors, hand rails, fire resistant garage entry-door and new stairs outside.

I believe they are expressing their displeasure with the fact that I have not accommodated some of their recent requests that went far beyond the scope of what is required (like insisting a licensed electrician switch out a smoke detector when we could do it ourselves) and I had to set some boundaries after years of high maintenance for them.

Broken glass lantern by the pool, smoke detector hanging in hallway, broken ceiling light in the bedroom, face plates missing or missing screws.

I didn't know there were detectors for these sorts of things.

This is where smoke/CO detectors, grounding, electric garage door reversers, and other goodies came from.If the municipality performing the U&O calls out an item, Seller is stuck with resolving it either by fixing it or negotiating it with the buyer.

Don’t skip safety stuff either—make sure you’ve got working smoke detectors, fire extinguishers, and a first aid kit.