Marineland PA0382 White Diamond Ammonia Neutralizing Crystals, 50-Ounce, 1417-Gram

It helps to keep my fish tank clean, the NO3 levels are finally coming down. Tip: put the recommended size( I use about a tablespoon) in a mesh bag, rinse, then place the bag into the filter. That way the water doesn't get cloudy.

Perfect for what I needed. My koi fish have been spawning (twice on the spring). I placed a mesh sack full of zeolite in the pond. The water quality and ammonia disappeared overnight...Great for outdoor ponds too.

Using this in my litter boxes, both with the traditional litter and breeze/tray style. It seems to be working quite well. At least have realized I don’t smell the odors like I used to.

Great for filters to remove ammonia in case of spikes but that isn't why I got this stuff. No I got it for cat urine. Specifically to get rid of the ammonia smell from cat urine that soaked into a carpet. I took some of this stuff, a towel, a hammer, and some concrete and powdered it and then rubbed it into the carpet (which had already been cleaned with enzymatic cleaner but still smelt vaguely of ammonia). I then left the carpet folded up outside for 12 hours in the sun. Bam! No more ammonia smell. Baking soda has NOTHING on the raw power of zeolite. I put a bunch in little mesh bags to leave in my cupboard that has a litter box in it and it works great to keep any smells down. This winter I shall be using the rest to hopefully help my filter clean the ammonia out of my small duck pond during the time when I don't have running water to the coop and the ducks spend the night sleeping in it.

This stuff absorbs the odor of my cat litter box. It seems to help extend the life of the litter as well (doesn't need to be replaced as often). Just take a few big handfuls & sprinkle it on top, and your kitties will automatically mix it in the box when they dig.