Camco Rhino 39000 15-Gallon Portable RV Waste Holding Tank Kit

When you're parked at a site without a sewer hookup, the Camco Rhino tote tank is what keeps you from breaking camp every time your tanks fill up. This is the 15-gallon model, the two-wheel version built for one job. Rolling your black or gray water from the RV over to the dump station without a mess. You empty your holding tanks into the Rhino, wheel it to the dump, empty it there, and roll back. No packing up, no moving the whole rig.

The tank is blow-molded polyethylene, so it takes the abuse of getting dragged over gravel and curbs without splitting. It rides on two no-flat wheels, and that's the detail that matters most out here. Air-filled wheels go flat sitting in storage all winter, and there's nothing worse than finding a flat the morning you're trying to dump and get on the road. These won't do that. The oversized handle gives you a solid grip when the tank is full and heavy, and it steers a lot easier than the smaller totes. After a dusty or sandy site, give the wheels and axle a quick rinse so grit doesn't work into the bearings. A tote that rolls easy is a tote you'll actually use.

Camco set this one up to connect cleanly on both ends. The inlet uses an EZ Grip female connection you can hand-tighten without tools. On the other side there's a male garden hose connection for rinsing the tank out when you're done. That rinse port is worth its weight, because a clean tank between uses keeps the smell down and the seals happy.

What sets this kit apart from a bare tote is everything Camco packs in with it. You get a 3-foot Rhino Extreme sewer hose with bayonet and lug fittings to run from your RV outlet into the tank. There's also a 15-inch female-to-female hose with EZ Grip connections for the shorter reaches. Two clear elbows come in the box, one with a swivel bayonet and a 4-in-1 adapter that fits most dump station inlets, and a second with a double swivel bayonet for tight angles. The clear elbows let you see when the flow runs clean, so you know the job's done. Storage caps with lanyards seal both ends for the roll back to your site, and the lanyards mean you won't lose a cap in the grass.

There's a steel tow adapter in the box too, so you can hitch the tank behind your golf cart or tow vehicle at walking speed for the longer hauls across a big campground. Just keep it slow. These totes are built to roll, not to tow down a road. Camco also throws in three drop-in toilet treatments to get you started, the same kind of tank treatment that keeps odor and buildup down in your RV tanks.

One tip from experience: don't try to empty a full 40-gallon black tank into a 15-gallon tote in one shot. Watch the level through the clear elbow and close your RV valve before the tote gets near the top. Overfilling is how you end up with a spill at the connection. Empty the tote, come back, and finish the job. It only takes a minute and it keeps everything clean.

Fifteen gallons is the right size if you're a couple or a small family doing weekend and week-long trips. It's enough to make the trip to the dump worthwhile without being so big you can't move it when it's full. If you're a full-timer or you've got a big rig with large tanks, you'll be making more trips with this size, and one of the bigger Rhino totes might suit you better. But for most RVers who just need to stretch a dry-camping stay by a day or two, the 15-gallon Rhino hits the sweet spot. It's a proven design, and once you've used a good tote you won't want to break camp for the dump station again.