Litter-Robot 4

We estimate that over 96% of cat households acclimate to Litter-Robot and most cats use Litter-Robot within several days to a week of setting it up. It’s natural for some cats to be initially uncertain or wary of new objects in their territory. Litter-Robot 4 is designed to be as cat-friendly as possible, featuring QuietSift® technology that minimizes noise during the cleaning cycle. The cleaning cycle will only begin minutes after your cat has exited the automatic litter box. You can also set the cleaning cycle delay to as long as 30 minutes, which may better suit skittish cats. With a little patience and encouragement, most cats will quickly adapt to Litter-Robot 4.

Those already familiar with a covered litter box may be quicker to investigate Litter-Robot 4. The trick is to ease your cat into transitioning to Litter-Robot. You can avoid startling your kitty by leaving Litter-Robot switched off until you notice your cat has used it. We recommend that you place Litter-Robot in the same location as the old litter box. You can leave the old litter box near Litter-Robot for a short time. Take a cup of litter from the old litter box and add it to the clean litter in Litter-Robot. The scent will be familiar, and your cat should be inclined to check it out. Learn more about acclimating your cat.

Yes, Litter-Robot was designed with your cat’s safety in mind. If your cat tries to enter the globe while it is rotating, Litter-Robot will stop immediately. Litter-Robot 4 features enhanced safety technology known as the SafeCat System with OmniSense® Detection that uses lasers to continuously analyze four safety zones, weight sensors, and anti-pinch software for enhanced cat detection.

Yes. Litter-Robot 4 uses laser and weight sensor technology to detect when your cat enters and exits the globe, which triggers the countdown timer and cleaning cycle. The SmartScale™will not recognize kittens that weigh less than 1.36 kg. Therefore, kittens that weigh less than 1.36 kg can use Litter-Robot 4, but not in automatic mode. Until they weigh enough, we recommend using your Litter-Robot in “semi-automatic” mode to keep your kitten safe and relieve you from litter box scooping. For “semi-automatic” mode, leave Litter-Robot powered off or unplugged. When you see your kitten has used it, wait about 7 minutes for the waste to clump, then power it on. Litter-Robot will automatically perform a clean cycle. Afterward, power it off again. Continue this supervised, semi-automatic mode until your kittens have gained sufficient weight to activate the SmartScale™.

We recommend up to 4 indoor cats per single Litter-Robot; however, we do have customers with more cats using a single unit. Litter-Robot 4 features an enlarged waste drawer, so you may only need to empty the waste drawer once every two weeks per one cat. Litter-Robot cycles 7 minutes after each use, but if the wait time is interrupted by another cat entering, the timer will reset for another 7 minutes, which could cause waste to be present in the litter for longer than 7 minutes. Too many cats per single Litter-Robot may result in the litter bed not being clean for the next use.

No, Litter-Robot does not have a weight limit. Size and weight often have little to do with whether a cat will adopt Litter-Robot or not. Whether or not Litter-Robot will be comfortable for a large or fat cat is up to the individual. As long as the cat can enter the globe and turn around inside it comfortably, it doesn’t matter how much they weigh. Litter-Robot 4 features a wider opening to maximise comfort for cats of all breeds and sizes.

Yes, compared to a traditional litter box, Litter-Robot can be a great solution for cats that spray or aim high when they go. The globe was designed to handle this, as the flange (rim) of the top half of the globe hangs over the bottom half of the globe, which itself is protected by a tough, impermeable flexible liner. If any liquid gets above the halfway mark (above the globe liner), it simply drips or drains down to the liner and then into the litter without collecting or pooling anywhere. This results in a clump forming at the perimeter of the litter bed, which is removed by the peeling action of the globe liner during a clean cycle. Constant spraying will require that you clean the interior of the globe more frequently to remove any residue, and, for deep cleaning, you can disassemble the globe into two halves (top and bottom).

Litter-Robot 4 is about the size of a nightstand, with a footprint similar to that of a large traditional litter box.
Litter-Robot 4 Dimensions:
Height: 74.9cm
Width: 55.8cm
Depth: 68.6cm
Entryway: 15.75″H x 15.75″W
Inside Globe: 15″-17″H (depending on litter level) x 19″W x 18″D
Litter Bed: 14″ wide at maximum
Waste Drawer: 5.5″H x 13.5″W x 9.25″D
Weight: 24 pounds

Starting out, we recommend placing your Litter-Robot near your cat’s old litter box. As soon as your cat starts using their self-cleaning litter box regularly, remove the old litter box. At this point, the placement is up to you. If possible, we recommend placing Litter-Robot on a firm surface. If you plan to use Litter-Robot 4 on carpet or uneven flooring, please purchase our Carpet Tray accessory.

Because waste is promptly removed and contained in the base, typical litter box odours will be significantly reduced with Litter-Robot. Litter-Robot 4 features an optional OdorTrap® System designed to neutralise litter box odours. This system uses the combination of a sealed waste drawer and carbon filter to reduce odours. You can opt to combine the carbon filter with OdorTrap® Packs to eliminate litter box odours through natural chemistry. For Litter-Robot 3, a large carbon filter located in the front of the waste drawer absorbs odours and moisture to discourage mold growth (a major culprit of that telltale litter box smell). The amount of odour control Litter-Robot will provide depends on the amount of odour created—by how many cats use it, what type of litter you use, and your cats’ diets, among other things. Of course, the more often you empty the waste drawer, the less opportunity there is for odour to escape. That said, if you empty the waste drawer and notice Litter-Robot is still a source of unpleasant odours, we recommend changing out the bed of litter completely, deep-cleaning Litter-Robot twice per year, and replacing the carbon filter as needed. It is also worth noting that scented litters are generally not as effective at absorbing odours as unscented litter. Instead, we recommend an unscented, odour-trapping, natural litter.

Yes. Because Litter-Robot automatically cleans after each use, your cat is not walking through dirty litter that can stick to their paws and be tracked out of the litter box. That said, the type of litter you use can make a difference in general litter tracking. Litter-Robot 4 comes standard with fence and step to reduce litter tracking out of the globe.

This depends on the number and size of your cats. Litter-Robot 4 features an enlarged waste drawer, so you may only need to empty the waste drawer once every two weeks per one cat.

No, Litter-Robot does not require special bags or liners for the waste drawer. As long as it fits, you can use it. Customers often use 37.85-49.21 liter kitchen rubbish bags or large plastic grocery bags. However, please note that waste level readings may be inaccurate when using a dark bag, especially when the drawer is empty. As clumps start to collect in the drawer, the readings will become more accurate. For the most precise waste drawer readings and a seamless experience, we highly recommend using Litter-Robot Waste Liners (three come free with each Litter-Robot).

Fill the globe with approximately 3.63kg-4.53kg of litter, until it meets or is just below the raised fill line on the black rubber globe liner when spread flat. If there is too much litter in the globe, it will be expelled into the waste drawer during the first few cycles. Since the waste clumps are removed during each cycle, there is no need to put excessive litter in the globe.

Litter-Robot uses litter very efficiently since the patented sifting system only removes the clumps. Litter-Robot 4 features real-time tracking of litter levels, so the Whisker app can alert you when to add more litter to the globe. We also recommend checking the litter level against the raised fill line (on the black rubber liner of the globe) each time you empty the waste drawer, which is about once per week for a single cat or twice for multiple cats. Be careful not to overfill the globe.

No, Litter-Robot simply requires clumping litter. We recommend a high-quality, standard-weight, clay-based clumping litter. Some silica gel litter beads and crystals can also be used with the Litter-Robot, as long as they pass through the screen. However, translucent or white-coloured litter (most often seen in crystal litter) may impact the litter level and Drawer Full Indicator (DFI) accuracy in Litter-Robot 4. Alternative, plant-based litters may also work, but these tend to form looser clumps that can cause condensation in the waste drawer. When using a plant-based litter, we recommend emptying the waste drawer and cleaning more frequently. Litters that do not work in the Litter-Robot are the strictly absorbent, non-clumping or loose-clumping litters, newspaper-based litters, and absorbent wood pellet litter.

No, Feline Pine pellets are too large to pass through the sifting screen, which prevents the litter sifting system from working properly. Feline Pine clumping is also too fluffy to effectively pass through the sifting screen.

No, any dust is negligible since the globe rotates very slowly.

If the globe jams or an excessive load condition occurs, the motor is turned off automatically. In addition, all Litter-Robots are equipped with an anti-pinch safety mechanism. Litter-Robot 4 features an integrated SafeCat System that continuously analyzes 4 zones to ensure kitty’s safety.

No, the globe will not turn while your cat is inside. Litter-Robot features weight sensor technology that detects your cat every time they enter, or re-enter, the globe, resetting the countdown timer to prevent the clean cycle from starting for another 7 minutes.

Weight sensor technology will detect your cat and the globe will stop immediately. The cycle will not resume until 15 seconds after the cat is no longer detected. If your cat or something else is still tripping the sensor, Litter-Robot will not resume the cleaning cycle and a series of lights will flash indicating the problem. The Instruction Manual will help you troubleshoot common problems and our Customer Experience team is here to help when you need it. Weight applied on the step and/or step mat will not trip the sensor and stop the globe rotation. This is intentional, as we do not want to invite a cat to enter by stopping the globe rotation. If, however, the cat steps inside, the globe will stop.

No, there are no electrical components inside the globe. The Litter-Robot operates on a safe 15 Volts DC using an adapter very similar to the ones you may have at home for a clock radio or for charging your mobile phone.

No, the globe does not contain any rakes or wires that could hurt or harm your cat. The Litter-Robot was designed with your cat’s safety in mind.

The Litter-Robot will work with both 110 and 220 currents. You can use any power supply that provides 15V DC, up to 1 amp, or a converter suitable to your region. If you’re worried about going from a human-powered litter box to an electric one, don’t be. The Litter-Robot consumes a very small amount of power. Based on the Litter-Robot 3, when the motor is working to rotate the globe during a clean cycle, the Litter-Robot uses just 2.7 watts of electricity. When the Litter-Robot is on standby, which is 99% of the time, it uses just 0.36 watts of electricity.

The Litter-Robot reduces the environmental impact of your litter box in several ways: The patented litter-sifting system disposes of soiled litter only, maximizing the amount of recycled, clean litter. Reduced litter consumption means less waste headed for the landfill and fewer trips to the pet store, too. The Litter-Robot is compatible with clumping litters, which capitalize on the natural drying abilities of clay and other materials, rather than the addition of chemical agents.

Visit our Getting Started page to view our online setup guide (including tips to acclimate your cat), the user manual, and accessory installation guides.

Just for cases like this, we have compiled a list of tips and tricks to help your cat make the switch to the Litter-Robot. If you have tried these things and your cat still refuses to use the Litter-Robot, don’t worry; you are protected by our 90-day in-home trial. If you and your cat are not completely satisfied for any reason, just return your Litter-Robot within 90 days of receipt for a refund of the purchase price (return shipping costs apply).

We recommend that you change the carbon filters every month depending on how frequently your Litter-Robot gets used. This is really up to personal preference. If you are noticing a stronger odour coming from the unit, it may be time to change the carbon filter.

We recommend that you change 2 OdorTrap® Packs every month or 1 pack every 2 weeks.

Cleaning the Litter-Robot exterior is easy. Just remove the globe and the drawer and give them a sponge bath, or take them outside for deep-cleaning with the garden hose. All other surfaces can be wiped clean, but should not be submerged. CAUTION: The base and bonnet of the Litter-Robot contain electrical components that should not be submerged.

This depends on your personal preference and your cat’s behaviour. We recommend cleaning the inside of the globe every one to three months. Learn how to clean your Litter-Robot: 1. Press the Empty button to cycle the globe clockwise, which will allow the litter to fall through the waste port and into the drawer for easy disposal. Sweep any leftover litter toward the waste port. Then, press any button to return the globe to the Home position. Ensure that all litter has been removed from the globe—wet litter turns into messy clay! 2. Turn the Litter-Robot off and unplug the unit. 3. Remove the bonnet: Press and release the snap tabs on both sides of the bonnet, then lift and rotate the bonnet off of the globe and carefully set it aside. 4. Remove the globe: With two hands, lift the globe off the base. 5. Clean the globe with water and a mild soap. There are no electronic components in the globe that can be damaged by soap and water. If the globe has become extremely dirty, it can be soaked and cleaned with a water hose or power washer. 6. Let the globe dry completely before reassembling it to the base and attaching the bonnet. For a quick touchup, you can use a disposable towelette to wipe the inside and upper half of the globe (without removing the litter). The Litter-Robot can be used immediately, since drying is nearly instantaneous.

Press and hold the Empty button on the Litter-Robot control panel for 3 seconds to enter Cycle Delay Setting mode. The light bar will indicate the current Cycle Delay setting. Subsequent short presses of the Empty button will toggle through the following settings: 3 minutes = 1 green light displayed; 7 minutes = 2 green lights displayed; 15 minutes = 3 green lights displayed; 25 minutes = 4 green lights displayed; 30 minutes = 5 (all) green lights displayed. After selecting the preferred setting, a 3-second long press of the Empty button will save the setting.

The Cycle Delay is the elapsed time starting from when your cat exits the globe until the unit starts a Clean cycle. It can be set for 3, 7, 15, 25, or 30 minutes on Litter-Robot 4. The default Cycle Delay is 7 minutes. Reduce the Cycle Delay if it is important to minimize odor and/or the time that waste is available to other pets—such as dogs. However, reducing the Cycle Delay may reduce the cleaning effectiveness if clumps do not have enough time to set up. Extend the Cycle Delay when using a lower-quality clumping litter that needs more time to set up.

You can also try these tips: (1.) Please make sure the back of the unit is at least 2-3 inches away from the wall. If the unit is touching the wall, it can impact the weight sensor technology. (2.) Make sure the unit is on a flat, even surface. Carpet or litter mats/rugs underneath the unit may impact the sensor. (3.) Standard weight litter is recommended for best results; you’ll want to keep the litter amount as close to or right under the fill line. The unit needs 3.6-4.5 kg of litter in the globe to detect a 1.3-kg cat in Litter-Robot 4. If the litter is below the line or you’re using a lightweight or plant-based litter, this will decrease the sensitivity of the unit. (4.) Check to make sure the unit is not in sleep mode. Sleep mode in Litter-Robot 4 is indicated by a solid purple light. If sleep mode is accidentally turned on, it will go into sleep mode at the same time every day until it’s physically turned off. If you’re still experiencing issues, please contact our Customer Experience team.