If you bring your bike in for service , Bespoke Cycles on Clay will probably do it. I just got my gravel bike serviced there, and part of that was getting a new chain. I had them run the chain through there ultrasonic cleaner and lube it with squirt.
There are a number of companies that sell pre-treated chains. Recently this was discussed on the TR podcast.
ICE Friction. They will sell you a pre-treated chain and will also recondition it if you send it back (for a fee).
If you want to go the DIY route, I recommend these videos from Josh Porter of Silca. He touches on a lot of the important aspects of cleaning and waxing a chain. Once the chain is cleaned well, the waxing is not that difficult. I’ve used both Molten Speed Wax and more recently tried Silca’s new wax. Silca did make it dead easy my putting the wax in a bag that can be heated up in a bag of water.
The pre-treated chains are pricey and understandably so.
I’m interested in just outsourcing Step 1 - cleaning off factory lube. Step 2 Waxing is the easy part.
I might explore asking bike, motorcycle, and auto shops if they’d clean my factory chain (chain #2) for a fee. If not, maybe outsource to a handyman website (TaskRabbit) or something similar.
If you could get someone to put it in mineral spirits for you for a day or two, that will work well to strip a brand new chain of the factory grease.
I get my mineral spirits at Home Depot and pour some into a glass mason type jar and put then soak the chain it it directly. It sounds like this might be challenging for you in the condo though.
A cheap ultrasonic will work just fine and is probably about the same cost as having someone do it for you. I bought mine from harbor freight. Ill usually give it a quick wipe down, toss it in the ultrasonic with some water soluble degreaser, rinse and give it a few minute soak/tumble in a jar of mineral spirits. Whole process takes like 20 minutes, about 5-8 of that is cleaning, the rest is just watching the ultrasonic or mineral spirit soak do its thing
Ive never noticed a difference between stripping first or just throwing the chain in wax. The chains are lubed with a petroleum oil thats soluble in wax so as long as you swish the chain around a bit in the melted wax its prob fine. There is probably a small difference in adhesion but Ive not seen that they have ever published that data.
Just get some ufo clean, soak the chain then rinse (maybe with boiling water to be sure) then you can use a drip wax - that’s my general advice for people not wanting to get involved in harsh chemicals or slow cookers
UFO Clean is the new chain cleaning recommendation at Zero Friction. Its both cheap and fast. And you can use it to clean chain while washing the bike. I use UFO drip wax about once a week.
As an FYI for the SF folks, its a 2 hour drive however I’ll mention it anyways. AE Service Course in Folsom will clean your chain and hot wax it for $50. He has an ultrasonic cleaner and uses the previous Zero Friction recommendations. And he is a great mechanic.