My mom taught me this. Once a week, you should pour about a cup of bleach in the toilet and let it sit for 5 minutes and then flush it down. It keeps the pipes clear and prevents future clogs. It also disinfects it and leave it fresh as well. It is much safer than the Liquid Plummer stuff for old pipes.
There is nothing you can do to improve the taste! Try changing the package or bottle sizes.
A bleach fogger canister - similar to those used to fog a room to kill fleas. The bleach mist would kill germs in hard to reach places. Good for bathrooms, kitchens, hospital/sick rooms.
I love Tilex! I live in the south where mildew is a constant problem, so I use it often! However, when spraying it on my shower tile, it just runs down the wall and won't stick to the grout that has mildew. If there were a thicker form or gel form, it would stick on the grout and do a better job. Since a gel form obviously wouldn't be in a spray bottle, there could be a "pot" container with a little plastic "brush" to brush it on the worst mildew spots.

I always make sure to fill my ice cube trays full of water from my Brita water pitcher. I want to make sure all my water and ice cubes are clean and natural tasting and thanks to the Brita system they can be!

I would like to see a large zipper-type plastic bag that would have a color safe bleach solution in it to soak soiled clothing while in a hotel room.
How about a green works garage/driveway cleaner
I keep a small assortment of Glad bags in my car filled with office supplies, one has paper clips, another post-its, etc. Comes very handy when I have free time in the car & need to get stuff done!
I'd like to see the cleaners designed to attach a hose for use in outdoor cleaning projects (car, deck of a boat).
Package product so it come in or with a spray bottle