Name: Biolan Simplett Plus
Brand: Biolan
Price: 1099.00 USD

For seasonal cabins and garden outbuildings without power: a large capacity, unpowered separating toilet that empties into a composter.

Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Needs no power or water, so it works in unwired cabins and outbuildings
A large 28 L solids receptacle means fewer emptyings than portable diverting toilets
Urine drains away through a pipe, so there is no bottle to carry
Built-in bulking material dispenser adds cover with a push of a knob

Cons

Tall and deep at about 40 in high and 27 in deep, so it needs a cabin bathroom, not a van
Needs a drain route for liquid and a 3 in vent pipe through the wall
One year warranty, the shortest here

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

A compact diverting toilet with a mixer, fan and full light for vans and boats, priced below the Nature’s Head.

$850

For boats and rigs with a tank to plumb urine into: a slim Air Head with no bottle to carry and a five year warranty, at a premium price.

$1,275

A household style diverting toilet for cabins and tiny homes with a urine drain, the one to pick if guests need to stand to pee.

$1,179