Thinktank Waterless Toilet
#20 in Urine-divertingFull review
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.
Amazon $1,179$1,179
The Thinktank Waterless Toilet is the better toilet overall, rated 3.1 to 3.0. The Thinktank Waterless Toilet leads on warranty. The BioLet Mini wins on capacity. The Thinktank Waterless Toilet costs $71 less ($1,179 vs $1,250).
BioLet Mini
#22 in Urine-divertingFull review
For tiny houses and cabins with mains power that want a small diverting toilet that looks like a household fixture, with a drain option.
BioLet $1,250 BioLet $1,250$1,250
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Thinktank Waterless Toilet for warranty (6-year warranty vs 3-year warranty).
- Choose the BioLet Mini for capacity (solids capacity not published, 2 gal urine bottle, urine can drain vs about 50 uses per solids bin, urine can drain).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every urine-diverting toilet; a clear win is highlighted. How we rank explains each one.
| Factor weight | Thinktank Waterless Toilet | BioLet Mini |
|---|---|---|
| Overall rating | 3.1/5 | 3.0/5 |
| Value 30% | 17 $1,179 | 11 $1,250 |
| Capacity 25% | 39 about 50 uses per solids bin, urine can drain | 65 solids capacity not published, 2 gal urine bottle, urine can drain |
| Power 15% | 50 power draw not published (neutral score used) | 50 power draw not published (neutral score used) |
| Certification 15% | 50 NSF/ANSI 41 certification not stated (neutral score used) | 50 NSF/ANSI 41 certification not stated (neutral score used) |
| Warranty 15% | 100 6-year warranty | 50 3-year warranty |
Specifications
| Thinktank Waterless Toilet | BioLet Mini | |
|---|---|---|
| Capacity | ||
| Type | Urine-diverting | Urine-diverting |
| Uses per solids bin | 50 uses | - |
| Urine bottle | - | 2 gal |
| Urine drain option | Yes | Yes |
| Agitator | No | No |
| Power and venting | ||
| Power | 12V/120V | 120V |
| Vent size | 3 in | - |
| Build | ||
| Seat height | 19 in | 17.8 in |
| Dimensions | 18 x 23.2 x 19 in | 15.75 x 20 x 20 in |
| Weight | 30 lb | - |
| Material | Rotationally molded plastic | - |
| Warranty | 6 years | 3 years |