In my Litter-Robot 4 review, I describe and show my experience using this unit and how great this automatic litter box works. However, in some cases, minor issues could appear that don’t allow you to get the best of this cool invention. That’s why the accessories of the Litter Robot 4 come to the rescue; they will help you to get the best satisfaction using this automatic litter box with your cat or cats. These accessories will help for better odor control, correct the cat’s posture when using the litter box, keep a neat and cleaner litter box area, and more. So here I show you and describe how they work and my experience using them. If I happen to use more accessories I will add them to this list.
OdorTrap Pack
The OdorTrap Pack is a small pouch containing beads with plant-based oils that attract odors. The bacteria-causing-odors attach to these oils and get destroyed. The OdorTrap pack doesn’t contain toxic chemicals such as phthalates, parabens, or even alcohol, so they are safe. This is an environmentally friendly, safe, and efficient technology to eliminate odors from your Litter Robot 4 or any traditional litter box.

I personally LOVE the smell of the beads. They have a nice mild citric aroma that provides a fresh touch to the litter box. How you can use the OdorTrap packs? There are three different ways to eliminate the odors of your Litter-Robot 4. You can use two packs, placing them inside the filter compartment of your Robot, in which case you need to remove the filter. This solution lasts one month without replacing the packs. In case you want to keep the filter in your litter box you can place the OdorTrap in the waste drawer instead, close to where the filter is located. For this option, you need to purchase the OdorTrap Pod Holder (see below) so you can put the single OdorTrap pack inside and place it in the waste drawer. This solution lasts for two weeks. A third option is that you can use the OdorTrap in both areas; inside the filter compartment and inside the waste drawer. The OdorTrap packs come in three sizes, 1-pack, 2-packs and 6-packs.

Personally, I have been using the OdorTrap packs in the filter compartment and inside the waste drawer of my LR4. According to my experience, they eliminate about 75-80%% of odors when opening the waste drawer which was the main issue for me. As I have stated always, I have never experienced bad odors leakage from my Robots, but when I had to open the waste drawer the story was different. I highly recommend this solution to reduce odors, it really works. Get your OdorTrap packs here.
Unpacking And Placing the OdorTrap packs in the Litter-Robot 4
OdorTrap Pod Holder
The OdorTrap Pod Holder is a plastic container that holds a single OdorTrap pack. The OdorTrap Pod Holder features a built-in magnet on the back and it comes with another magnet with a peel-off adhesive so you can place it anywhere you need. The OdorTrap holder is an accessory designed to be placed inside the waste drawer, right in the middle of the waste drawer’s bottom (on the LR4). If you use it with a traditional litter box you need to place the holder above the litter box, on a wall.




How to Set Up OdorTrap Pack & Pod Holder in the Litter-Robot 4
Carbon Filter

The Litter-Robot 4 comes with a carbon filter compartment where you place the filter to absorb odors from the Litter-Robot. The Carbon Filter is located at the bottom of the globe, sitting right above the waste drawer. In order to replace the filter you need to use the Whisker App in the option to “Replace Filter”. When you tap on this option the globe rotates halfway locating the filter compartment right on top so you can easily change it. Is recommended to replace the carbon filter every month to control odors effectively. The replacement filters come in a package of 6 and if you subscribe you can get 10% Off your first month, plus free shipping. Subscribe to never run out of filters here.
Review of Filters and How to Replace Them
Carpet Tray
The Carpet Tray is an accessory created for people who have thick carpets (3mm/1/8 inch) that could interfere with the accuracy of the Litter Robot 4’s smart weight-scale sensor. If you place the Litter Robot 4 on top of a thick carpet the smart scale may register less weight of your cat than the actual one. This means the Whisker App will be showing your cat weighing less. In case you have a kitten weighing a little over 3lbs the unit may not register enough weight for the unit to operate correctly. Also, if you place the Litter-Robot 4 on a thick carpet the unit lacks stability. That’s why Whisker offered this accessory. If you need the carpet tray for your Robot, get it here.





The carpet tray has been designed to fit perfectly the Litter-Robot 4’s footprint. The tray doesn’t take extra space and looks good since it follows the outline of the Litter-Robot 4. The installation of the Carpet Tray is a little tricky since you can’t really see very well where you are placing the unit on top of the tray. That’s why you need to place it on top and adjust the location as you check it. The sides of the carpet tray need to be equal on both sides; in front, you have to hardly see the tray.

I must mention that the Carpet Tray doesn’t fit the Litter-Robot 3. I checked and it doesn’t fit at all. It is only designed to be used with the Litter-Robot 4. Among the Litter-Robot 3 accessories, there isn’t any carpet tray like this one. That’s too bad!
Litter-Robot 4 Carpet Tray Video Review
Litter-Robot 4 Fence

When you purchase your Litter-Robot 4 you will receive a mini fence which works fine if your cat is not a digger or causes litter box accidents. But if you have a cat that digs vigorously or a feline that aims towards the entryway when doing its business you may want to get the taller Fence. The fence extra accessory provides a 3.5-inch tall barrier instead of the 2.5-inch tall of the included mini fence.


The fence reduces cat litter scattering by approximately 75% and it’s the perfect solution to keep the litter box area cleaner. Additionally, the fence stops urine leakage to the outside of the litter box in case your feline friend urinates too close to the entry. Also, the fence works as a deterrent for bad postures when the cat uses the Litter-Robot. If a cat puts its butt towards the entry, the taller fence stops and corrects the cat’s position to turn around. The cat when feeling an object in its butt, turns around naturally.
The fence comes in two colors, black and white. Below you can see a picture of how both colors look on my Litter-Robot 4 (which is white) so you can decide which one looks better. To install the fence you don’t need tools, you simply center the fence at the bottom of the entry and snap the fence on top until you hear a “click”. That’s all. In order to get your cat used to the new fence simply entice him with treats and spray some pheromones on the fence. Get the fence for your Litter-Robot 4 here.


Litter-Robot 4 Fence Review
Litter-Robot Litter Trap
The Litter Trap is the Litter Robot litter mat that keeps the litter box area neat and clean. The Litter Trap consists of a top mesh made of EVA foam that is sewn together with a bottom part that collects the cat litter. The bottom part is made of EVA foam on the outside, polyester fiber inside, and coated with PE plastic film that makes it waterproof.

The top mesh allows the cat litter to fall through and the bottom collects and holds the cat litter. This way the surface of the mat looks clean, hiding the cat litter under so you don’t need to clean the mat every day. One side of the mat is sewn and the other side has the two parts attached by a velcro so you can open it and close it for easy cleaning.



The front side of the Litter Trap features an indentation that matches perfectly the Litter Robot shape so the sides around the unit are well protected as well. The Litter Trap mat measures 23’’ W x 30’’L so it covers most of the area where the cat steps on or jumps onto. The Litter Trap bottom is coated with a urine-repellent film to protect the floor in case of litter box accidents.
Litter-Robot Litter Trap Review
Litter-Robot 4 Camera Mount Kit
The camera mount kit is a cool accessory that is intended for use if you are planning on putting a camera on your Litter-Robot. By placing a camera on top of your unit you not only can monitor the functioning of the unit and the elimination habits of your cat, you can also check on your feline friend while being away from home. The Camera Mount kit doesn’t include the camera itself so you need to purchase it if you don’t have one already. You can find a comprehensive review on how to install the camera mount and what type of camera is suitable for it, on my Litter-Robot 4 Camera Mount Kit Review. Check it out.

The accessories for the Litter-Robot 4 allow you to get the best out of your unit, reducing odors, litter scattering, and much more. The accessories improve the benefits of this great automatic litter box, providing a better experience and convenience using this unit.
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