Quick answer: For cardboard cat projects in an apartment, peel off all plastic packing tape and shipping labels, pull staples with pliers and sweep with a magnet, skip glossy, waxed or heavily printed boxes, and join pieces with PVA glue or paper tape. Plain brown corrugated boxes with light printing are the safest choice.
If you live in an apartment, you probably receive more boxes than you have room for — groceries, cat litter, online orders. They make excellent free cat toys, scratch pads and hideouts. But delivery boxes come wrapped in things cats should not chew: plastic tape, shipping labels with adhesive film, staples, and sometimes coatings or heavy inks. This guide sorts the good boxes from the bad and shows how to clean them up without disturbing neighbours.
The general principle comes from basic cat-care advice: cats explore with their mouths and groom constantly, so anything that sticks to fur or paws can be swallowed. The ASPCA's general cat care pages and ASPCA Animal Poison Control are worth bookmarking for any household question.
Sorting delivery boxes: keep, strip or recycle
| Box type | Verdict | Why |
|---|---|---|
| Plain brown corrugated shipping box | Keep | Ideal base material |
| Brown box with one- or two-colour logo | Keep | Light printing, usually water-based ink |
| Glossy printed retail box (electronics, toys) | Recycle | Plastic-laminated or coated surfaces |
| Wax-coated produce or meal-kit box | Recycle | Wax flakes when scratched |
| Box that held cleaning products, chemicals or fuel | Recycle | Possible residue |
| Food box with grease stains | Recycle | Smell attracts chewing; can harbour mould |
| Damp, musty or water-stained box | Recycle | Mould risk |
A simple test for coatings: scratch the surface with a fingernail. If it feels slick and the colour does not scuff, the box is probably coated or laminated. If it feels papery and fibres lift, it is plain corrugated. Apartment recycling rooms are a good place to sort — leave the rejects there.
Tape: the number-one thing to remove
Plastic packing tape is the most common hazard. Cats love to pick at its edges, and chewed strips of plastic and adhesive are not something you want swallowed.
- Peel every strip, including small bits trapped under flaps and folded edges.
- If tape tears and leaves its paper-like layer, cut that section of cardboard away.
- Duct tape and masking tape are also out on any surface the cat can reach.
- Reinforced 'filament' tape (with fibres inside) is especially important to remove — the threads are string-like.
For your own joins, use water-activated kraft paper tape (the kind with a gummed back you wet) or simply PVA glue. Paper tape looks neat and is the closest thing to cardboard itself. For a comparison of how tape-covered and tape-free cardboard scratchers wear, see tape vs shields vs scratchers.
Labels and adhesive residue
Shipping labels are usually paper or plastic film with a strong adhesive back. Peel them; if they split, cut out the panel rather than scraping and leaving a sticky patch that collects fur. Avoid solvents such as adhesive removers on anything the cat will use — the point is to reduce what the cat could lick, not add chemicals. Also remove barcode stickers, 'fragile' stickers and plastic document pouches.
Staples: find every one
Many heavier boxes, especially from furniture or appliance deliveries, are stapled at the corners. Staples work loose as cats scratch and can end up in paws or on the floor.
- Check every corner and bottom seam.
- Pull staples with needle-nose pliers or a staple remover, not your fingernails.
- Sweep each flattened panel slowly with a fridge magnet; it catches broken staple ends.
- Drop removed staples straight into a jar so they do not end up in the carpet.
- If a staple will not come out cleanly, cut that section away.
Never add new staples when building. Use slot-and-tab joints or glue instead.
Inks and printing
Most printing on corrugated shipping boxes is done with water-based flexographic inks, and light one- or two-colour logos are generally considered low risk on boxes a cat plays with. Heavier full-colour printing, metallic or fluorescent finishes, and glossy coatings are a different story, mainly because they usually sit on laminated or coated board. The practical rule: prefer plain brown, accept light logos, avoid shiny and heavily printed boxes. If a box is printed on the outside but plain inside, build with the print facing out or turn the box inside out. If your cat ever shows signs of being unwell after chewing anything, call your vet or ASPCA Animal Poison Control.
A five-minute strip-down routine at the door
The easiest habit in an apartment is to process boxes the moment they arrive, before they pile up in the hallway and before the cat claims them. Keep a small kit by the door: needle-nose pliers, a fridge magnet, a box cutter with a retractable blade, a jar for staples and a bag for tape and labels.
- Unpack the box and remove all packing materials: air pillows, foam, paper, silica gel packets.
- Decide immediately: keep, or straight to recycling (use the sorting table above).
- Peel tape and labels into the bag.
- Pull staples into the jar, then do the magnet sweep.
- Flatten along existing folds and pencil 'OK' on the inside flap.
Done this way, each box takes about five minutes and your reserve of clean cardboard is always ready. It also stops the common apartment scene of a cat sitting in an unstripped box in the hallway, picking at the tape edge.
Apartment-specific hazards to watch
- Mail-room and recycling-room boxes from neighbours: you do not know what they held. Skip them unless they are obviously clean and dry.
- Boxes stored on a balcony: likely damp or dusty; recycle rather than use.
- Air-pillow and bubble-wrap packaging: plastic that cats may chew; bin immediately.
- Radiators and baseboard heaters, common in older buildings: keep cardboard projects at least 3 feet away.
Quiet tools for thin apartment walls
Breaking down boxes late in the evening can be noisy. A few quieter options:
- Score with a box cutter and fold rather than stamping boxes flat.
- Pull staples with pliers over a folded towel to muffle clicks.
- Cut on a cutting mat or old yoga mat, not directly on hard floors.
- Peel tape slowly; fast peeling is the loudest part of the job.
- Do the work before about 9 p.m. if your building has quiet hours.
Small-space projects that use clean boxes
Once boxes are clean, the simplest apartment projects take almost no space:
| Project | Materials | Footprint |
|---|---|---|
| Flat scratch pad | Strips cut from 2-3 boxes, rolled or stacked, glued with PVA | Size of a placemat |
| One-box hideout | Medium box with two 6-7 inch doors | About 18 x 18 inches |
| Under-bed tunnel | Two shoebox-size boxes glued end to end | Fits under furniture |
| Window ledge box | Shallow box glued flat, folded fleece inside | Sill depth |
For combining cat furniture into a small footprint, see cat furniture for small spaces.
Storing and recycling cardboard in a small space
Keep only what you need: two or three flattened clean boxes is a good reserve. Store them flat behind a door or under the bed, off the floor if your apartment gets damp. Mark clean ones with a pencil 'OK' once you have stripped them so you do not have to recheck. When a cat toy or castle is shredded, soiled or wet, flatten it and take it straight to the recycling room. Many buildings ask for cardboard to be flattened and free of plastic tape — stripping it for your cat already does half the job.
When a cardboard project is not enough
Cardboard is a great short-term scratcher, but cats that scratch your sofa need a sturdy, permanent option too. Scratcher placement rules explains where to put one, and the complete sisal scratcher guide compares the materials. For understanding scratching itself, International Cat Care on scratching is a clear, authoritative resource, and five reasons cats scratch the couch covers the behaviour in plain language. For gentle sofa deterrents, read how to keep cats off the couch.
Tape, ink and staples FAQ
Is the ink on cardboard boxes safe for cats?
Light printing on brown shipping boxes is usually water-based and generally considered low risk. Avoid glossy, laminated and heavily printed retail boxes, and build with print facing outward.
What tape is safe for cat cardboard projects?
Water-activated kraft paper tape or PVA glue. Remove plastic packing tape, duct tape, masking tape and filament tape from any surface the cat can reach.
How do I find hidden staples in cardboard?
Check corners and bottom seams, pull staples with pliers, then sweep each panel with a fridge magnet to catch broken ends.
Can I use any delivery box for a cat toy?
No. Skip boxes that are waxed, glossy, greasy, damp or that held chemicals. Plain dry brown corrugated is best.
