Choosing a cleaning frequency on price alone is how people end up spending the most. Stretch the interval too far and the home slides back far enough that each visit takes longer, costs more, and eventually needs another deep clean to recover. The right rhythm is the one that keeps a house level, because level houses are cheap to maintain.
Weekly service makes sense for households with young children, two or more pets, or a lot of people moving through the same space. Kitchens and bathrooms in those homes are genuinely different after seven days than after fourteen, and carpet and hard floors collect at a pace that doesn't wait.
Biweekly is the most common choice and the best value for most Charlotte-area households. Two adults, maybe one pet, a house that gets tidied as people go. Every two weeks is close enough that nothing compounds and far enough apart that you're not paying for work that wasn't needed.
Monthly works for smaller homes, single occupants, people who travel often, and anyone who genuinely keeps up with the day-to-day themselves. The thing to understand about monthly is that each visit does more work, so the price per visit is higher than a biweekly visit — it isn't half the cost of twice the frequency.
Two practical notes. First, almost every home that hasn't been professionally cleaned in a while should start with one deep clean, then settle into the rhythm; starting a recurring schedule from a backlog means paying recurring prices for deep-clean work. Second, the right frequency changes — a new baby, a new puppy, a kid moving out. Say so, and the schedule should change with it.