I bought and used the Toyota A/C cleaner kit and it worked great and was absolutely worth it. My dealer charges $199 for this service. I paid less than $30 for the Toyota Kit. There are alternatives if you look around.
The larger can is a foaming disinfectant for your A/C evaporator and the small can is a spray that gets rid of any smells in the ducting.
The panels you need to remove come off very easily and the whole process took me less than an hour. 3/4 of that time is just waiting for the foam cleaner to liquefy and drain out.
The evaporator housing is not completely sealed so some cleaner may leak out. I placed a towel underneath to catch any leaks.
I used it and it works, better than some other alternatives as you don’t get a perfume smell. I don’t pay a dealer, buy the kit and do it yourself, super easy.
I used Lysol spray I set the a/c on high recirculated vents on opened the back door sprayed a 1/2 can inside shut the door 10 minutes then shut it off over night next day left the sunroof vent open for the day done
Clean and fresh
Mike