How Many Dog Poop Bags Do You Actually Need?

Quick answer: most healthy adult dogs poop one to three times a day, so one dog gets through roughly 30 to 90 bags a month. Two walks a day is the common case, which lands around 60 a month, or about 720 a year. Add 20 percent for the bags you drop, tear or hand to someone at the park.

The math, by dog and by walk

Bag count is driven by how often your dog goes, not how big your dog is. A Great Dane does not go more often than a beagle. It goes bigger, which is an argument for a longer bag, not for more of them.

If you want the actual numbers, how much dogs poop, breed by breed works out the daily output for the 60 most popular breeds, and why small dogs produce more per pound.

Multiply poops per day by 30, then multiply by the number of dogs.

Then add a buffer of about 20 percent. Two poops a day works out at 60 bags, so call it 72. That buffer is not padding. It covers the bag that tears, the second bag for a bad one, the one you gave to the person at the dog park who was patting their pockets, and the roll that ends up permanently in a coat you stopped wearing in March.

How long a box actually lasts

Once you know your number, box sizes stop being abstract.

If you would rather not do any of this arithmetic yourself, the bag quiz asks four questions and gives you the number and the box that matches it.

Why you burn through more than the math says

Most people underestimate, and it is usually one of these four:

• Thin bags mean two bags. If you can feel warmth through it, you are going to double up, and your real usage quietly doubles with it. Thickness is measured in mils and microns, and the number on the box is only half the story. We wrote up what bag thickness actually buys you.
• Short bags waste bags. A bag you cannot tie without getting close to the mess is a bag you will sometimes abandon and start again. Ours are 14 inches long for exactly this reason.
• No stash system. If bags live in one place, you leave without them, and then you buy an emergency pack at a corner store at four times the price.
• No idea what is left. A roll gives you no read on how many remain until it runs out, which is always mid-walk.

Turning the number into a system

Knowing your number only helps if the bags are where you are. Three stashes covers almost everyone: one on the leash, one by the door, one in the car. That way running out means running out everywhere at once, which almost never happens. The longer version of this is in how to never run out of poop bags again.

For most households that means a Classic Box of rolls for the leash and the car, and a Tissue Box by the door, where you pull one out like a tissue instead of fighting a roll with your coat on. If you want both, the Classic and Tissue combo covers 470 bags in one order.

Then set the delivery to match your number rather than your memory. Subscribe and Save runs every one, two or three months, takes a little off every delivery, and can be paused or cancelled whenever you want. Match the frequency to the table above and the problem stops being a problem.

Common questions

How many poop bags does one dog need a month?

Around 60 for a typical dog walked twice a day. The realistic range is 30 to 90 a month depending on how often your dog goes.

How many poop bags are in a roll?

Ours hold 15 bags per roll, so a 270-bag Classic Box is 18 rolls. Counts vary by brand, which is why comparing box prices without comparing bag counts is how you end up overpaying.

Do bigger dogs need more poop bags?

Not more, but bigger. Frequency is roughly the same across sizes. What changes is how much is in each one, which is a case for a longer, thicker bag rather than a higher monthly count.

How many bags should I keep spare?

About 20 percent above your monthly number, and split across at least two places. One stash means one point of failure.

Do puppies go through more?

Considerably more. Puppies poop far more often than adult dogs and it tracks their meals. There is a full breakdown in our puppy poop schedule.