Steam cleaner

[Perfectlap]

I don't think something in that price range is going to generate enough heat. I've had a couple they just don't have the wattage. Recently I have used a handheld steamer from Amazon (the one that looks like a blue ball) which I think cost about that much but you can't really use it for more than five minutes at a time before you have to put more water in it. It might be able to do the job, or it might just make a big soggy mess. The professional detailers use this thing called the Tornado Cleaning Gun. It has an articulating cable that pushes against the carpet fibers and separates all the dirt and muck. It would make quick work of any mold. I would see if there is a high end detailer in your area that uses one of these.

https://www.youtube.com/watch?v=MJUzRyIa7qo

https://www.youtube.com/watch?v=tJa3bMIvHSU

[Sassmatt72]

when I pulled them,
they dripped, before squeezing them...
smelled like carpet cleaning solution...

not advised with carpets fully in car. DEF NOT WITH alarm unit un protected...

maybe by removing the seats, bagging the alarm box, and lifting the edges of the carpet to expose the underside...

the foam in mine (under the carpet) was like a big sponge...
FYI

[Sassmatt72]

steam hitting cold pans would condense to water and be trapped forever under there....