How often do I need to change the dirt disposal bag on the Roomba i7+?

7.62

Overall Score: 7.62/10

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Consumer:6.79/10

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In a typical household the Roomba i7+ Clean Base dirt-disposal bag fills up about every 30 to 60 days. iRobot rates the AllergenLock bag at "up to 60 days" of debris, but real-world replacement intervals depend almost entirely on three variables: how many pets you have, how much carpet versus hard flooring you run the robot over, and how many cleaning jobs per week you schedule.

A few realistic ranges from owner reports. A two-person, no-pet, mostly-hardwood apartment that runs the i7+ three times per week: roughly 75 to 90 days per bag. A family of four with one short-haired dog and a 50/50 carpet-to-hard-floor split running daily: roughly 30 to 45 days per bag. A heavy-shedding household with multiple long-haired pets and wall-to-wall carpet running twice daily: as little as 14 to 21 days per bag. The Clean Base does not weigh debris — it just runs the evacuation cycle on every dock and waits for you to notice the bag indicator light on top of the tower. The Home app also pushes a "Replace your dirt-disposal bag" notification when its internal counter trips.

Replacing the bag is genuinely simple. Lift the lid on the Clean Base, pull the cardboard tab on the full bag — the bag's mouth seals itself with a sliding rubber gasket as you remove it, which is the "AllergenLock" feature and the reason the bags cost more than a generic vacuum bag. Drop a new bag into the slot, fold the lid down, done. There is no filter to clean or motor brush to access on a normal bag swap.

On price: iRobot's three-pack of genuine AllergenLock bags retails for $19.99 on irobot.com, which works out to roughly $6.66 per bag. Amazon usually has them in stock at the same price, occasionally with a small discount in three-pack or six-pack quantities. Authorized retailers (Best Buy, Target, Bed Bath & Beyond before its closure, now Walmart) carry them for the same MSRP. Third-party compatible bags from Hannos, Yokuee, and others run roughly half the price, but quality varies — some seal poorly, some don't trip the tower's full-bag sensor correctly. The proprietary slot geometry means you cannot use a generic vacuum bag.

One operational note: do not let the bag overfill past the indicator. The Clean Base airflow chokes when the bag is full, which causes weak evacuations and partial dock returns where the onboard bin still has debris in it.