Time for a nice, practical post in the midst of holiday preparations.
I recently purchased a bottle of Ecover Limescale Remover, and I give it a big thumbs up. We have pretty horrendous water in our little town, and an old tub that has never seemed clean regardless of what I've used (which has included bleach, Comet, Barkeeper's Friend, and a variety of cleaning soaps). I sprayed down the tub with this, let it soak, and then scrubbed and reapplied. (Truth be told, I let the stuff dry on because I forgot about it for a few hours.) It looks so much better. I like the fact that it isn't toxic, doesn't stink, and is safe enough to let my daughter help me. It's not dirt cheap, and I suspect the active agents could be purchased and assembled for much less, but sometimes an easy clean is simply worth the price to me.
On another note, I have given up on the idea of alternative cat litter. I like to try alternative just-about-anything, so when I read about pine I gave it a try. I got a 40 lb bundle of pine shavings, and then one of pine pellets, from the local feed store. While the cats enjoyed it fine, and it did actually seem to cut down on the odor and it was scads cheaper, the mess factor, in the end, ultimately has driven me back to the conventional junk you poor in the pan. However, we are trying to train the cats to go outside, which is the next best thing to teaching them to use and flush a toilet.