I am in California and have Toto single flush toilets which meet the very stringent California low flow rates.

In my opinion with the low flow toilets, having a dual flush toilet seems unnecessary as the amount of water used is minimal.

FWIW I have a Toto washlet which sends a bit of water to wet the bowl when it senses activity. This pre-wetting along with the Sana flush finish (or whatever Toto is calling it now) minimizes any kind of residue. The toilet really cleans itself and all it needs is a once a week cleaning.

Thanks, Helen. We currently have single flush Toto toilets (2 different models although I don't know the names) and we have periodic problems with both issues. I assume the technology has improved as these toilets are 12+ years old. The dual flush toilets I'm looking to purchase are for a different home.

Anyone else have feedback on dual flush toilets?

I have an American Standard dual flush in both bathrooms. I don't know the model numbers, but one is 6 years old and the other is 10. I use well water, so I was just trying to be conservative for the sake of conservation.

The "small" flush uses less than half the tank, and a "big" flush uses about 4/5 of the tank. I'm not sure how big the tank is, though... maybe 2 gallons?

I rarely have to use the "big" flush, and the only time I need more than one flush is when I've added cleaner or something.

I have 2 Glacier Bay dual flush toilets. I first saw them recommended in Consumer Reports. They work very well. Very rare to flush twice. They're inexpensive, but the seats are lightweight and could use an upgrade.