PETKIT Odor Eliminator N50 2.0: How to Use It Properly
By PETKIT UK | Published: 2026-10-15
Category: How-to Guides
A step-by-step guide to placing and replacing the PETKIT Odor Eliminator N50 2.0, with the mistakes that shorten its 30-day lifespan and the refill tips that keep a litter box smelling neutral.
Quick answer
Unwrap one N50 2.0 piece, slide it into the waste-bin compartment of your PETKIT litter box, and note the date. Each piece is rated for 30 days, so replace it on that schedule rather than waiting for a smell to appear. If odour returns early, check the waste bin seal and litter depth before blaming the refill.
What the N50 2.0 actually does
The Odor Eliminator N50 2.0 is a refill that sits in the waste bin and controls odour at the source, before it drifts into the room. It is not an air freshener and it does not mask a dirty box: it works on the waste bin itself, which is where most of the smell in a self-cleaning litter box originates.
That distinction matters when you are troubleshooting. If the room smells while the waste bin is closed, the refill is doing its job. If it smells when the drawer opens or during a cycle, you are dealing with airflow, litter depth or a seal issue instead.
Where the refill sits in your routine
Treat the N50 2.0 as part of the waste-bin cycle, not the litter cycle. You change litter, top up litter and clean the drum on one rhythm; you swap this refill on a separate 30-day rhythm. Keeping those two schedules apart stops you from replacing the refill early because the box had a busy week, or forgetting it entirely because nothing looked dirty.
The refill itself is small and light, so it is easy to keep a spare within reach of the litter box. Storing it beside your waste bags means the swap takes seconds and you are less likely to run a week without one.
When the refill is not the problem
If you have replaced the refill on schedule and the box still smells, the refill is unlikely to be the cause. Check three things in order: whether the waste drawer is overfilled, whether the bin seal is sitting flat, and whether litter depth is within your model's recommended range. A shallow layer of litter lets waste sit exposed longer before it is cycled, which puts more load on the refill than it was designed for.
If you want a second layer of defence for the litter area itself, a crystal litter formulated for odour control can reduce what reaches the waste bin in the first place. That is a different job from the refill, and using both is reasonable rather than redundant.
Step-by-step: using the N50 2.0
- Empty the waste bin first: Remove and dispose of the waste bag before you touch the refill. Working in a full bin means you are handling the refill around the strongest odour source in the box. Checkpoint: an empty, wiped bin. If the bin still smells at this point, clean it before fitting a new piece.
- Unwrap one piece only: Take a single 5 x 5 x 1 cm piece out of its packaging. Do not open the whole pack: the unused pieces are rated for a 24-month shelf life and are better left sealed. Common mistake: unwrapping all three at once and leaving two exposed in a cupboard.
- Seat it in the waste-bin compartment: Place the piece flat in the compartment your model provides for it, so it sits level and does not interfere with the drawer closing. If it can shift when the drawer slides, it is not seated correctly. Checkpoint: close and reopen the drawer once to confirm nothing catches.
- Mark the date: Write the fitting date on the pack or set a reminder for 30 days later. The refill works gradually, so there is no obvious moment when it stops. Common mistake: waiting until you can smell the bin again, which means you have already gone past the useful window.
- Replace on schedule, not on smell: Swap in a fresh piece at the 30-day mark and dispose of the old one with the waste bag. Keep the replacement part of the same session as emptying the bin so it never becomes a separate task. Next step: if odour returns before day 30, inspect the bin seal, drawer fill level and litter depth before buying more refills.
Product facts
- Odor Eliminator N50 2.0: Each piece is rated for 30 days of use, and the pack contains 3 pieces. One pack covers roughly three months, so you can plan replacements on a calendar instead of buying reactively.
- Odor Eliminator N50 2.0: Replacement is designed to be quick and tool-free. The swap is short enough to fold into your normal waste-bin emptying rather than becoming a separate chore.
- Odor Eliminator N50 2.0: Each piece measures 5 x 5 x 1 cm and weighs 35 g, with a 24-month quality guarantee period. The flat, compact shape is easy to store, and the long shelf life means buying a multi-pack does not risk the spares expiring before you use them.
- Urine Monitor Crystal Litter Set (pH Detection): The Urine Monitor Crystal Litter Set combines crystal litter with integrated pH detection for urinary health monitoring. If odour keeps returning alongside changes in litter box habits, a health-tracking litter gives you information the refill cannot.
