It’s always a good idea to have a bottle brush on you at all times. It makes it easy to scrape the side of the bottle clean, and it’s great to use to clean bottles of wine or anything else that has a label on it.
It’s also easy to make a cleaning tool out of bottle brush.
While it’s nice to have a bottle brush on you at all times, it’s also a good idea to bring it with you whenever you go out. The bottle brush is great in this regard because it makes it easier to clean bottles.