Composting Toilet Reviews

Click on one of the four categories below to read through composting toilet reviews from real people just like yourself. We've got composting toilet reviews from around the United States, Canada, and other parts of the world. Many of the reviews also include photos of the customers' composting toilets after installation.

View Self-Contained Reviews

Here you'll find customer reviews for our self-contained composting toilets:

Excel Reviews

Excel NE Reviews

Excel AC/DC Reviews

Compact Reviews

Spacesaver Reviews

Mobile Reviews

View Central System Reviews

Here you'll find customer reviews for our Centrex central system composting toilets:

Centrex 1000 Reviews

Centrex 1000 NE Reviews

Centrex 2000 Reviews

Centrex 2000 NE Reviews

Centrex 2000 AF NE Reviews

Centrex 3000 Reviews

Centrex 3000 AF Reviews

View Commercial Use Reviews

Thinking about installing a Sun-Mar system in your place of business? Find out what other business owners have to say about their composting toilets installed in their hotels, resorts, etc.

View Outhouse-Retrofit Reviews

Many Sun-Mar owners have retrofitted their old outhouses and outbuildings with composting toilets. Read about their experiences, and see some photos of their installations here.