Dog poo bags and walk kit in the UK: what to buy
The short answer
- Our pick
- Plain black bags in a 400 pack, £6.09, which works out at about 1.5p a bag. Councils tell you to tie the bag and put it in a bin, and every bag in this guide ends up in a bin anyway, so the label on the roll changes your bill far more than it changes where the bag goes.
- On a budget
- TIAKI Biodegradable Dog Poop Bags, 120 for £4.19 (about 3.5p each), if you want a bag that says biodegradable. Or buy the black 400 pack and tie the bags tight. Both are cheap enough to try before you commit to a bigger pack.
- Don't buy
- Paying 6p to 7p a bag for 'with handles' packs unless the black bags really are splitting on you, and trusting any 'biodegradable' roll to justify leaving the bag on the path or in a hedge. Councils call that littering, bag or no bag.
On this page
The poo bag looks like the one piece of dog kit where you cannot go wrong. You will use thousands of them, so it is also the one where a small mistake costs the most.
The mistake is paying for a green label. A box that says “biodegradable” sounds like a better choice and costs two to four times as much per bag. Whether it behaves any differently in the bin is a separate question, and it is less clear than the packaging suggests.
Which dog poo bags should you buy?
Buy plain black bags in a 400 pack unless you have a reason not to. At zooplus in November 2026 a 400 pack (20 rolls of 20) cost £6.09, about 1.5p a bag. The cheapest “biodegradable” option I found was £2.79 for 60 bags (4.7p each), and the 120-bag TIAKI pack was £4.19 (3.5p each). Pick on price per bag, thickness and whether the bags tear off cleanly, because those are the things you will notice on a wet Tuesday morning.
The price per bag, worked out
I opened each product page and divided the pack price by the bag count. Prices are one-off prices, not zooplus Repeat subscription prices.
| Bag | Material (per the page) | Bags | Price | Per bag |
|---|---|---|---|---|
| TIAKI Black Dog Poop Bags | Not stated | 600 | £11.39 | 1.9p |
| TIAKI Black Dog Poop Bags | Not stated | 300 | £6.09 | 2.0p |
| Dog Poop Bags, Black | Polyethylene, 10 µm | 400 | £6.09 | 1.5p |
| TIAKI Biodegradable Dog Poop Bags | Corn starch, PLA and PBAT, 17 µm | 120 | £4.19 | 3.5p |
| TIAKI Biodegradable Dog Poop Bags | Same | 270 | £10.79 | 4.0p |
| Biodegradable Dog Poop Bags | Biodegradable | 60 | £2.79 | 4.7p |
| kooa Biodegradable Dog Poop Bags | Corn starch, EN 13432 per the page, 15 µm | 90 | £4.99 | 5.5p |
| Biodegradable Dog Poop Bags with Handles | Maize starch, 20 µm, tie handles | 100 | £6.29 | 6.3p |
A few honest caveats on that table. The kooa page is inconsistent: the title and variant picker say 15 rolls, while the description says the pack holds 6 rolls, which is 90 bags. I used 90 because that matched the £4.99 variant. The page for the black 400 pack also contradicts itself on roll count, so check what arrives. And I have not tested any of these. Everything here is what the retailer’s page says.
What a year of bags costs
This is illustrative arithmetic, not a measured figure. If your dog needs three bags a day, that is 1,095 bags a year.
- Black 400 pack: about £17.
- TIAKI biodegradable 270 pack: about £44.
- Biodegradable with handles, 100 pack: about £69.
Now multiply by the dogs you own. I have four, so the gap between 1.5p and 6.3p a bag is not abstract for me. For a single dog it is £50 a year, and for a household of three or four it is a night out.
Biodegradable, compostable, plain: does it matter?
Less than the packaging implies, and here is the part you can check yourself.
The zooplus pages use the words loosely. The TIAKI page says “100% biodegradable” and “compostable”, and names the material (corn starch with PLA and PBAT), but does not name a compostability standard. The kooa page says the bags meet DIN/EN 13432 and break down within 90 days in industrial composting plants, then adds that they should not be thrown away outdoors. The handled bags say they meet European compostability standards.
Read that kooa line again. A bag that composts in an industrial plant is not the same as a bag that does much in a council bin or a hedge. Nothing on those pages says a bagged poo belongs anywhere but a bin.
What do councils say? Chesterfield Borough Council says to put the bag “in the nearest dog poo bin or litter bin”, and if there is no bin nearby to take it home and put it in your black bin. It also says not to leave a bag at the roadside or throw it into a hedge: that is littering, and “you could be fined if you don’t pick up your dog’s mess.” That is one council, not national law, and fine amounts vary by area. But it is the practical rule, and it says nothing about the bag material.
So the useful question is not “is it green?” It is “does it hold, and does it tie?” Plain black bags that split are worse than any label can fix.
When thin bags fail
The cheap black bags are 10 µm per layer on the page I opened, against 17 µm for the TIAKI biodegradable and 20 µm for the handled ones. Thin is fine for a firm stool on a dry day.
It is less fine on the day your dog has an upset stomach. The 400 black pack has a 4.1 out of 5 rating from 82 reviews, and the recent one-star reviews mention thin bags, splits and bags not sealed at the bottom. The biodegradable handled bags have 4.3 out of 5 from 55 reviews, but some reviewers there say the bags split and that quality has dropped, and others say the pack is often out of stock. No option is clean.
A reasonable compromise: keep a thick roll in the pocket you use on walks, and a cheap thin roll for the garden, where a split costs you a rinse and nothing more. Or double-bag when the stool is soft. It costs 1.5p.
Handles: are they worth it?
Tie handles are what make the bag easy to carry for twenty minutes until you find a bin. The handled pack costs 6.3p a bag against 1.5p for plain black. That is four times the price for a convenience.
If you tie the neck of an ordinary bag in a knot, you get the same result. The reason I would pay for handles is a hand that struggles with knots, or a long walk with no bin. Otherwise skip them.
The walk kit that is worth buying
Most “walk kit” lists are a sales page in disguise. Three items earn their place.
A dispenser or clip. A Trixie Poop Bag Dispenser costs £6.09, takes one roll of 15 bags and has a snap hook for a lead, a bag or a belt. It saves you rummaging, and that is all it does. A spare roll in a coat pocket does the same job for nothing.
Somewhere to put treats. If you are using walks for recall or training, a treat bag stops you digging in a pocket. The TIAKI Treat Hip Bag Allrounder is £10.49 and has a removable washable treat pouch, a pocket for poo bags, and reflective details. It is rated 5.0 out of 5 on eight reviews, which is a small sample. A coat pocket and a clean sandwich bag do the same thing for less.
A long line, if recall is the work. That is a separate purchase with its own rules: see long lines and recall training.
What I would not spend extra on
- Scented bags. I found no reason the fragrance helps. It is a cost for the nose, not the dog.
- Handled packs for every walk. Keep one roll for days when you need them.
- Hand-held scoopers. The zooplus hand-held scooper is £8.29. It may suit a bad back. For most owners a bag over the hand does the job.
- Buying 900 bags at once to save a few pence per bag, unless you know the brand holds up. Try the small pack first.
Who should not buy
If you only walk one small dog on routes with dog bins every few hundred metres, a 600-bag pack is a lot of plastic in a drawer. Buy 120.
If you walk in open countryside with few bins, think about where the bag will end up before you fill it. Chesterfield’s advice is to take it home. A bag swinging from a hedge or fence post is the thing councils fine for, and a “biodegradable” label does not change that.
If you want the greenest option, I cannot give you a verdict. I found no independent test on the pages I read comparing what happens to these bags in a UK bin, and I will not invent one.
What to do next
If you are putting together your first set of dog kit, the puppy checklist shows what to buy, what can wait and what to skip. And if your walks involve training treats, dog training treats covers size, calories and cost per session. For the lead and harness that sit on the other end of the walk, see lead, collar and harness for a puppy.
Prices and product details are from zooplus.co.uk, checked in November 2026, and they move often. The bin and littering guidance is from Chesterfield Borough Council’s dog fouling page, read in November 2026; it is one council and fines vary by area. I could not open the Welsh Government research brief or the Woking Borough Council page when I tried, and I did not find a Dogs Trust, RSPCA or Blue Cross page on poo bag materials, so none of them is quoted here. I have not tested any product. Nothing here is veterinary advice — if your dog’s stool changes or you are worried about their health, contact your vet.