Is the WOLF130 good for pet stains?

Yes, spot extractors like this are aimed at pet accidents and fresh spills on carpet. Work the solution in, then extract and let the area dry fully. Set-in or old stains may need more than one pass.

Does it need to be plugged in?

Yes. It runs on 120V AC mains power, so there is no battery. You will need an outlet within reach of the cord for the whole job.

Can I use it on hardwood or tile?

It is recommended for carpet and rugs. Hard floors are better handled with a wet-dry vacuum or a hard-floor cleaner, since the spotter is built around carpet extraction.

How does it compare with a full-size carpet cleaner?

A full-size extractor covers whole rooms with larger tanks and wider cleaning paths. The WOLF130 is a spot tool: smaller, easier to store and quicker to set up, but you will empty and refill it more often.

What do I need to use it?

Carpet cleaning solution mixed as the label directs, an outlet, and time for the carpet to dry. Check the manual for the tank capacity and cord length before buying.