The Shower Smells Fine Until You Get Into the Caravan

Modern caravan bathroom showing onboard wastewater and odour management needs

You step into the caravan shower and there’s a sour, swampy smell coming up from the drain. The shower base looks spotless, so where is it coming from? In most cases, the answer is further down the pipework.

What's in your shower drain

Every shower sends soap, body oils, skin cells, shampoo and hair down the drain. In a caravan, that water doesn’t go far. It sits in short pipe runs, traps and the grey water tank, often for days at a time. That organic material is the perfect food for odour-producing bacteria.

Why the smell seems to come from the shower

The shower is often the lowest open drain in the van, so gases from the grey water tank and pipework find their way up through it. Travelling makes it worse: the water in the trap sloshes out on rough roads, leaving an open path for smells to come up.

Why bleach and drain cleaners don't last

Pouring bleach down the drain might make it smell better for a day, but it doesn’t remove the sludge coating the pipes. It can also damage seals and isn’t something you want going into the ground at a campsite.

Let the microbes do the work

ProPower is a biological treatment for wastewater and pipework. Its probiotic microbes coat the pipes, consume the odour and digest the putrid sludge that’s causing it, then keep working in the grey water tank.
  • Mix a small amount of ProPower Grey Water Tank Treatment with water and pour it down the shower drain.
  • Do the same with the sinks so all the pipework is treated.
  • Repeat after each tank empty, and before you store the van.
  • ProPower is Septic Safe
It’s designed for wastewater treatment; follow campground and local disposal requirements, and much nicer to live with than bleach.