Approach all pesticide use with caution. This is the product information on the item Sharon suggested:
http://www.pesticideinfo.org/Detail_Product.jsp?REG_NR=00968800201&DIST_NR=000478

I can’t comment on that except to say that you might not want to be constantly spraying it in your car as Sharon suggested (an enclosed space). You can do research on the safe use of this substance but I can’t advice except to say the best advice I’ve been given is to use pesticides according to labeling instructions only.

I would suggest something else: get some fresh water diatomaceous earth (DE), which is the safe and effective kind (NOT pool grade DE). You can read about it in the FAQs (see below). You don’t want to be inhaling clouds of it, but it can be put into cracks in your home and maybe the car (the seats might mean you inhale too much, though). It is a mechanical killer and bed bugs that cross it die within 10 days. Putting it around your home would mean that if you accidentally bring one or two home, you don’t start a full infestation.

I also recommend reading our FAQs on how to avoid getting or spreading bed bugs–since the principles they discuss can be applied to a person exposed regularly at work.

This has been more about you and not about your clients. Unfortunately, they need an aggressive course of PCO treatment. Thorough cleaning of bed frames with a contact killer (by the PCO preferably) and encasement of mattresses with sturdy covers (AFTER PCO treatment of mattresses with pesticides) will also be necessary. Their clothing should be washed and dried on hot and kept in sealed, airtight bags. We recommend XL ziplocs for stuff continually being opened.

Some of the useful stuff is found in the “Useful Stuff” page above.
The DE FAQ is under “Treatments”, and the clothing FAQs are under “eliminating bed bugs from clothing…” and the FAQs on not catching or spreading bed bugs are under “Travel” in the FAQs:
http://bedbugger.com/faqs

Since this is veering away from the topic of this post, if you have further questions, please go to the forums:
http://bedbugger.com/forum

Regarding the individual rooms at the apartment complex:

I forgot, you can make weather stripping for the front door with duck tape. Put it around the entire door including the base by the floor. You fold over a small wedge at the bottom so it won’t stick when opening and closing the door. It will stick a little at first but after a couple of times works ok. Make sure the bottom duck tape on the door is long so you can set something on the edge to keep the bugs from crawling in at night. The bugs are sticking on the duck tape. It works!

Because I was so concerned about passing the bugs around, I did not go anywhere except to my families house to get rest. I would immediately take my clothes off and put them in the washer and head for a hot shower.

As far as the individual rooms do the following:

I have put duck tape on every crack or molding in my room and covered my air conditioner with plastic which is also my heating unit for the winter so that the bugs cannot get through the central system into my room (the unit is central air\heating and therefore bugs from any part of the building could get in my room). I also close my window at night so bugs cannot get by crawling on the outside wall from someone elses room into my room) and if you have holes in your screen tape them with scotch tape. I also wash my shoes in hot scalding water in the shower at night and spray them with bug spray before entering my room which I keep by the front door. I was tracking bugs in from the common areas on the bottom of my shoes. Do not sit in the common areas and make sure if you have to use a public bathroom to wipe it off completely before using. I now have slept 3 nights without getting bitten. These precautions work! Hope this is helpful.