Xiaomi Secondary Cleaning: How it Works and Why You Need It in Robot Vacuum Cleaners

If you own a Xiaomi robot vacuum cleaner (e.g. Mi Robot Vacuum-Mop 2 Pro, DreameBot L10s Ultra or Viomi V3 Max), you've probably come across the term "secondary cleaning" in the Mi Home or Xiaomi Home mobile app. But what does it mean in practice? Why does a robot sometimes go to the same place twice, even though it seems to have already cleaned everything? And most importantly, how does this feature affect cleaning quality and resource consumption?

In this article, we will discuss in detail what is secondary cleaning in the Xiaomi ecosystem, how it is implemented in different models of robot vacuums, and when it should be turned on (or vice versa, turn off).

What is secondary cleaning in Xiaomi robot vacuum cleaners

Secondary cleaning is a function where a robot vacuum cleaner passes through an area that has been removed again, but with different parameters, depending on the model and firmware, this can mean:

• 🔄 Repeated passage along the same trajectories (e.g., after dry cleaning, follows wet).
• 🧹 Increased suction force at problem areas (carpets, corners).
• 💧 Additional mop flooring in deep cleaning modes.
• 📍 Focus on high-pollution areas (defined by sensors or cleaning maps).

It's important to understand that secondary cleaning isn't just a duplication of route. Xiaomi robots (especially models with LDS- scanner or 3D- cameras) analyze sensor data and adjust the second pass for specific tasks. For example, if the first pass the dust sensor detected a high level of pollution on the carpet, the second time the robot can increase the suction power or walk through this area cross-shaped.

How secondary cleaning differs from the main one: key differences

To avoid confusion, compare the basic and secondary cleaning in the table:

For example, in the Xiaomi Mi Robot Vacuum-Mop 2 Pro, secondary cleaning is activated automatically if the robot detects that after the first pass there are dust particles or mop stains on the floor, while not repeating the entire route, but focuses only on the “problematic” squares of the map (usually 0.5×0.5 m in size).

⚠️ Warning: In budget models (e.g. Mi Robot Vacuum 1S), secondary cleaning can run on a simplified algorithm — just duplicating the route without analyzing the contamination. This increases battery consumption, but does not always improve the result.

When to Include Secondary Cleaning: 5 Real-life Scenarios

It's not always useful, but here are some cases where it's worth activating:

1. Carpets and fuzzy coatings. After the first pass, the pile can still have dust, and secondary cleaning with increased suction power will solve the problem.
2. Kitchen or hallway: High-traffic areas require more careful handling, especially if sticky spots remain on the floor.
3. Wet cleaning after dry, so if the robot vacuums first and then cleans the floor, a secondary passageway mop will remove the stains.
4. Cleaning after repairs. Small building dust (plaster, cement) is poorly collected in one pass.
5. Allergies in the house. Double treatment reduces the amount of dust mites and allergens.

Here’s when you should not use secondary cleaning:

• 🚫 On smooth surfaces (laminate, tile) without severe contamination - one passage is enough.
• 🚫 If the robot cleans daily and there is little dust (e.g., in the bedroom).
• 🚫 When the battery is low, the function increases energy consumption by 20-40%.

Make sure the robot is fully charged |Clean the main and side brushes |Check the water level in the tank (for models with a mop) |Close the doors to rooms where cleaning is not needed |Configure the cleaning areas in the app-->

How to set up secondary cleaning in the Mi Home/Xiaomi Home app

The interface of the settings depends on the model of the robot, but the general algorithm is as follows:

1. Open the Mi Home or Xiaomi Home app and select your robot vacuum cleaner.
2. Go to Cleaning → Cleaning Settings (or Cleaning Settings).
3. Find the option “Secondary Cleaning” (could be called Double Cleaning, Repeat Cleaning or Deep Cleaning).
4. Select one of the modes: 🔘 Auto - the robot decides whether to re-clean (recommended). 🔘 Always secondary passage after each cleaning (increases battery consumption). 🔘 Never - off.

DreameBot L10s Ultra

"Secondary wet cleaning"

Some firmware has advanced settings where you can specify:

• 📏 Secondary cleaning areas (e.g. carpets only).
• ⚡ Re-passing power level (e.g., Max+).
• 💦 Water supply intensity for mop (for persistent spots).

Example of the way Xiaomi Mi Robot Vacuum-Mop P:

Mi Home → Device → Settings (⚙) → Cleaning Modes → Secondary Cleaning → Auto

Hidden Chips: How to Make Secondary Cleaning Work More Effectively

To make the function bring the maximum benefit, use these tips:

1. Update the map of the room. If the robot misidentifies the zones (for example, mistaking the carpet for a smooth floor), secondary cleaning will be useless. To update the map: Mi Home → Map → Edit → Clean and recreate
2. Configure areas with different parameters. In the app, you can highlight areas on the map where secondary cleaning will always be on (for example, near the front door), and where it will never (bedroom). 💡 Use the Virtual Walls feature in Mi Home so that the robot does not waste time cleaning under furniture where secondary aisle is not needed.
3. Synchronize with the schedule. If the robot cleans at night when the houses are quiet, you can turn on secondary cleaning with maximum power, and in the daytime, you better limit yourself to one aisle.
4. Clean the sensors. Contaminated dust and humidity sensors can give false signals, causing the robot to repeat cleaning without having to.

For models with AI- algorithms (like the DreameBot Z10 Pro), secondary cleaning can adapt to your habits, for example, if the robot notices that there are always crumbs left in the kitchen after the first pass, it will automatically increase the suction power in this area.

⚠️ Warning: In Xiaomi robots with firmware until 2022, secondary cleaning could work even if the option was disabled due to a bug in the algorithm. If the robot passes through the same place for no reason twice, update the software!

Common Mistakes and How to Avoid Them

Many users misuse secondary cleaning, resulting in a quick battery drain or wear of parts.

• ❌ All surfaces are turned on. One pass is enough on laminate or tile -- secondary cleaning is just wasting resources.
• ❌ Use with maximum power always. Max+ mode quickly puts the battery down and increases engine wear.
• ❌ Ignoring brush pollution notifications, if the main brush is clogged, secondary cleaning won't help.
• ❌ Adjusting without regard to the type of coating, for example, on tall carpets, a mop in secondary cleaning is useless.

To avoid these problems:

1. Before setting up, check the type of coating in each room (in the application you can assign labels: “carpet”, “tile”, “laminate”).
2. Use the "Auto" mode for secondary cleaning - the robot will choose the optimal parameters.
3. Watch the condition of the consumables: change the side brushes every 3-6 months, the main one - every 6-12 months.

💡

Secondary cleaning is only effective if the room map is set up correctly, and if the robot misidentifies the areas (for example, mistaking the carpet for a smooth floor), the function will not work properly.

Comparison of models: who is better at secondary cleaning

Not all Xiaomi robot vacuum cleaners are equally good at secondary cleaning, and the table below shows a comparison of popular models:

The DreameBot L10s Ultra is the leader in efficiency thanks to its dual camera system and Deep Clean 2.0 algorithm, which analyzes pollution in real time. But the Deerma DEE60 is only suitable for basic cleaning: its secondary passage is simply a repetition of the route without intelligent adaptation.

FAQ: Answers to Frequent Questions About Xiaomi’s Secondary Cleanup