Pet tech, priced over the years you own it

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A self-cleaning litter box, a smart feeder or a treat camera has two prices: the one on the box, and the one you keep paying. Liners, carbon filters, crystal trays, fountain filters, desiccant packs, camera plans and GPS memberships are all printed somewhere on the brand's own store, with how often the brand says to replace them. Paw Ledger reads those pages and adds the lines up, the way you would in a ledger.

• 56devices read on November 7, 2026
• 11brand stores: CATLINK, Fi, Furbo, Halo, Neakasa, PETKIT, PetLink, PetSafe, Petcube, Petlibro, Whisker
• 46consumable lines priced, with the brand's replacement interval
• 5categories: litter boxes, feeders, fountains, cameras, GPS trackers

1. The five categories at a glance

How we compare: criteria, sources and dates

2. Litter boxes: the box is the small part

A crystal-tray box such as the PetSafe ScoopFree Crystal Classic costs $99.95, then one disposable tray a month: PetSafe sells them at $73.49 for three and says one tray serves "a single cat for up to a month". Over three years that is 36.5 trays, about $894 [calc], nine times the box. At the other end, a Litter-Robot 4 costs $699 and then about $97 a year in liners and carbon filters at Whisker's own intervals [calc]. The cheapest three-year total in our check is not the cheapest box: see how much a self-cleaning litter box costs and the best self-cleaning litter box by need.

3. Feeders: hopper size, kibble size, and who eats

Most dry-food feeders publish a kibble size range: 2 to 15 mm on every Petlibro Granary page, up to 0.47 in (12 mm) on PETKIT's, 5/8 in or less on Whisker's Feeder-Robot. Hoppers run from 3 L to 32 cups. Two cats can share a dual-bowl feeder, or each get an RFID feeder that opens only for its own tag: automatic cat feeder for 2 cats.

4. Fountains: the filter decides the running cost

Petlibro says to replace its Dockstream filters every 2 weeks, CATLINK every 2 months, PETKIT every 30 days in normal mode. Bought at the brands' own pack prices, that puts a Petlibro filter at about $98 a year, a PETKIT filter at about $49 and a CATLINK filter at about $32 [calc]. The fountain table is in the full comparison.

5. Cameras and GPS trackers: read the plan

Furbo sells its 360° Dog Camera at $184 alone, or $54 when you take a yearly Furbo Nanny plan billed at $83.92 the first year and $7.99 a month after that. Petcube's Bites 2 Lite is $99.99 with Petcube Care from $4.99 a month on a yearly plan. GPS trackers all need a plan, and only Halo printed a price we could read: Furbo vs Petcube, dog GPS tracker with no subscription.

6. Two tools that do the sums

The 3-year cost calculator adds up any device over one to three years, with your own replacement pace. Which one fits my pet checks your cat's or dog's weight, the number of pets, kibble size and neck size against every published limit, and tells you when a brand simply does not say.