How to keep grout clean in tile floors. First sweep or vacuum. Then use dry Swiffer to get up dust still remaining. Then mop with a well wrung out mop, and glide over the tile. The point is to not be moving fine dirt into the grout, which is why you need to clean up all the dust particles so you don’t create muddy water. It really works, your grout will stay whiter longer. Swiffer is one of the best inventions for floors in my opinion. The dry Swiffer.
Often I just spray some Tylex in the toilet to clean it. No scrubbing. I do scrub it at least every two weeks, but inbetween I just spray it. Remember to wear white or be naked.
Hardwater stains and rust stains in the toilet bowl can usually be removed with a pumice stone. Just a few dollars at Lowes or Home Depot. For hard water stains I also use Lemi Shine. I just use a little bit, a few drops of water to activate it. It smells good and works well. I HATE the smell of CLR.