Forthglade new and existing customer offers.jpg

Is the Petacarium Portable Dog Shower Your Next Must-Have Pet Grooming Tool?

Feb 17

6 min read

Updated: Sep 22

We personally test every product featured in our reviews to provide accurate recommendations. Smart Bark is supported by its audience. When you purchase through links on our site, we may earn an affiliate commission. Learn more

It's that time of year when our lovely summer dog walks give way to mud-splattered dogs, muddy wellies and mucky cars.

Sometimes it seems like we spend more time cleaning the aftermath than actually dog walking.

Let's face it, dogs love to walk whatever the weather, but it's a real challenge watching your car suffer from a mud-caked dog during the wet and muddy month!

One solution could be to invest in a portable outdoor dog washer to clean your dog before they jump back in the car.

We first tested this tank as the Petacarium portable dog shower. Since then the makers, a UK family business that also runs dog walking and boarding, have given it a name with a nicer ring to it: the Posh Wash by Petacarium. Same solid kit, smarter branding, and a couple of welcome upgrades we are pleased to report.

But how good is it really ? There's only one way to find out. This is our Petacarium Posh Wash review.

TABLE OF CONTENTS

What is a Portable Dog Shower?

Portable dog showers are designed to use outdoors to conveniently wash your dog before they climb in your car or run into your home.

The best portable showers have their own water tank, an integral hose, can easily wash hard-to-reach spots whilst exerting enough water pressure to get the job done.

Some, like the Petacarium come equipped with a neoprene jacket as standard, which keeps the water warm for hours.

Most are simply pressurised by hand with a pump which is ideal if you have an anxious dog as they operate silently.

Portable showers are also eco-friendly as they use significantly less water than a garden hose or pressure washer.

If you're in a rush, we think that the Petacarium dog shower is one of the best dog washers on the market. It's well designed, easy to fill, easy to pressurise and keeps the water warm.

View on Petacarium

View on Amazon

Petacarium Review

1. Petacarium Posh Wash: Design & Build

The Posh Wash is a hand-pump, pressurised water tank made for washing dogs (and bikes, boots and boards) wherever you are.

It comes in 5L and 8L sizes and now includes a 2m hose as standard, up from the shorter hose on the original model, so you get far more reach around a restless dog.

Also in the box: an insulating neoprene jacket, an adjustable shoulder strap for easy carrying and car transport, an on/off lever, and an eight-setting shower head. A silicone-bristle pet brush, spare jackets and microfibre towels are available as optional add-ons.

For our review we tested their larger 8L model.

Our first impression was good, it certainly has a pretty classy design as far as portable showers go. Resembling an oxygen tank with curved, smooth lines it's all wrapped in a colourful neoprene jacket.

The handle felt sturdy and well made, perfect for pumping to pressurise the water flow. We liked that when not in use, the handle locks into a closed position for storage.

Another big positive in terms of design is the adjustable shoulder strap. An 8L cylinder of water can be fairly heavy, so a shoulder strap is a thoughtful addition.

The eight settings on the sprayer cover everything from a gentle mist to a full stream, but for dogs the maker recommends the flat or vertical settings. Both give the most directional flow and the best pressure, so shampoo shifts and rinsing is quicker, kinder and far less faff on a thick coat.

Petacarium also offer a brush accessory which can be bought separately. The Shower Brush has silicone bristles and an on/off switch to help you wash your dog one-handed, plus you can add a little shampoo.

There is now a proper spread of colours to suit every character. Choose from 11 jackets in all: five solid shades, five camo prints and a bold Rainbow, each available across both the 5L and 8L tanks. Function first, but a fair bit of fun too.

2. Petacarium Posh Wash: Performance

We loved that it's truly portable which is a must for washing your dog on-the-go. There is no need for additional hoses, buckets of water or electricity.

Designed to work silently (great for anxious dogs) by pressurising with a few hand pumps, we found the handle very easy to use and after a few compressions the water pressure was respectable.

No portable shower will be able to match your hose pipe water pressure, but the Petacarium certainly exerts enough force to clean your dog's paws and coat.

We did need to repressurise a couple of times mid-clean, but that's to be expected.

Crucially the shower head worked well and there's an integral on/off lever to help control the flow of water at your fingertips. Plus it has lots of uses at home and in the garden - bikes, football boots, BBQs, even hanging baskets.

Petacarium Shower head and Pet Shower Brush

It's fair to say that we've tested a variety of portable showers and have found that a combination shower/brush is the best way to clean your dog and shift that dried on mud.

So we preferred the Shower Brush to the standard shower head which is included and it certainly did a better job of removing stubborn mud from our dog's coat.

That neoprene jacket is the quiet hero. In our controlled testing, water sat at 45°C at fill, cooled to 36°C after two hours and was still a usable 30°C after three, meaning water stayed wash-ready for a good few hours.

Water Temperature Test

Time After Filling	Water Temp (Approx)	Usable for Dog Wash?
0 hours (just filled)	45°C (warm tap water)	⚠️ Too hot
1 hour	41°C	✓ Yes - comfortably warm
2 hours	36°C	✓ Yes - still warm
3 hours	30°C	✓ Yes - tepid but not cold

Note: Tested in indoor conditions. Results will vary.

So you and your dog can enjoy some lovely long winter dog walks followed by a warm shower for your dog and your wellies. What more could you ask for?

Petacarium Portable Shower for dogs in car boot

We should mention that the sheer volume of water makes the full 8L version fairly heavy to carry to the car. So we really appreciated the handy shoulder strap, it definitely made life easier.

Saying that, if you've got a small to medium sized dog you may want to consider the smaller and lighter 5L portable washer.

Once at the car, the strap is fully adjustable so it can be used to secure the Petacarium to your car headrests. Clever stuff!

3. Petacarium Posh Wash: Test Results Scorecard

Here's a summary of our scores and notes on all the key features and performance.

Test Criteria	Score (out of 5)	Notes
Ease of setup & filling	4	✓ Wide, top opening ✗ No Max. fill gauge
Pressurising ease	5	✓ Easy to push down vertically
Water pressure & flow	5	✓ nearly a minute after 6 pumps
Water temperature retention	5	✓ passed 3 hour test
Mud removal effectiveness	4	✓ New longer hose, but brush needed
Dog tolerance (anxiety test)	4	✓ No noise, but did try to avoid the water, long hose helped
Portability & carry	5	8L version is heavy, loved the shoulder strap
Build quality	5	Solid, no leaks
Value for money	4	an 8L washer including neoprene jacket, but the brush accessory is an extra purchase.
OVERALL	4.5

Our Verdict

We felt that the Petacarium Portable Shower looks and feels premium in every way. It's nicely designed and well built, ticking all the boxes for a portable dog washer.

Easy to fill and use, the addition of a shoulder strap really helps transport it to and from the car.

Both the 8L and 5L versions come in an array of colours with fancy neoprene jackets which worked exceptionally well at keeping your water warmer for longer.

A range of accessories is available including longer hoses, additional jackets, microfibre towels and of course the pet shower brush.

Who Should Buy/Skip

✅ BUY the Petacarium if:

You have a medium to large sized dog and want a good value option that can be used on your dog, garden, car and boots. We think the pump action is superior to the Mud Daddy and the height of the Petacarium is perfect for anyone struggling to bend down or kneel on the floor.

❌ SKIP the Petacarium if:

You're looking for a portable dog washer with a brush as standard. Also if you struggle with heavy weights, we'd suggest opting for the smaller 5L model.

Buying Options

View on Petacarium

View on Amazon

Dog wearing sunglasses lying on a rubber ring in a pool

Beat the Heat : Best Cooling Products for Dogs

Keep your pup cool in the summer heat with these innovative cooling products! From hydrating drinks to paddling pools - chill out in the sun

DOG HEALTH

two dogs sitting at a table with forthglade dog food in a farmhouse setting

Forthglade Review 2026: Wet Food, Cold Pressed Dry, Treats & More

Our complete guide to the Forthglade range,wet food, cold pressed dry, lightly baked, puppy food, treats & dental products. Tested on real dogs, with honest pros, cons and daily costs

DOG NUTRITION

Why Trust Smart Bark ?

Claire is the founder of Smart Bark and a lifelong dog lover.

With a 10 year background in retail buying for one of the UK’s major retailers, she brings a keen eye for quality and value to every dog product review.

Claire personally tests every item featured on Smart Bark with her own family dog and her team of dog testers—so you get honest, expert advice (not recycled marketing blurb) from someone who truly understands what works in real life (and what doesn’t).

No gimmicks. Just trusted recommendations backed by experience.

SMART BARK