utter mundana

Dog pees on my bedroom carpet far more often than I would like, and I know one reason she's doing it there is because she's done it before.

Other aspects of training aside, a necessary step is to clean the carpet.

I don't own a carpet shampooer, and haven't a car, such that renting a shampooer is likely to be impractical, even supposing I knew where to rent one.

Is it worth buying one of those very small cheap ones, or can one achieve the same effect with a scrubbing brush and a bucket of water? I really have no idea about this, and I know that some of you are both Pet and Household Experts. Your advice would be appreciated.