The media could not be loaded. Well it def works. I looked at my kids shower and didn't realize how bad it had gotten. I had the kids scrub it and that hard water dirt was not coming off. My daughter mentioned that it would be cool to glue a sponge to the power drill, so I looked it up and found these pads. They are amazing. Now, once you put the pads on the drill attachment things can get out of hand if you aren't prepared for the quickness of the drill. It took me a good 3-5 min to get into the swing of it. But, I finally found my flow and started scrubbing away. I used AJAX cleaner and water. I had to work in 1x1' sections because if I did too large of an area without washing off the dirty suds, they would dry and I'd have to re-scrub the area. I also used a small trash bag to protect the battery and trigger portion of my drill. I don't think this really made a difference though because water seeped into the bag. It took me 1.5 hours to get the whole tub/shower done. I would have never got it done if I did it by hand. My only complaint is the blue pads. I couldn't tell the diffence between the two pads, except that the blue ones tended to leave blue pieces where ever I used it and in some spots tinted the tub blue. I'd stick to the white ones. I would def buy this again and I will when the pads run out. One thing I'd change is next time I'd make the kids clean the tub and laugh as I watched them try to control the drill.

I found the scrubbing power of the pads to be really effective. If you need to scrub fragile or shiny things this might be too abrasive as I noticed some fine scratches left behind. Also a couple of things to keep in mind. The handling of a drill as a scrubber isn't that great. Often it would tilt and be unstable. This was the biggest drawback. A grinder with an abrasive pad would be better, or buffer where you can hold with two hands. Pressing the trigger of the drill, plus adding pressure is a balancing act. Also there is no protection for the pads spray. So if you're using a gel or paste as a medium, you'll get spray from the pad wheel spinning. There's no fix for this. For a quick one-off use it's great, but not for any really big projects or for long-term use.

does job well, but needs domed shield because it splashes stuff all over(water and cleaner ) pretty messy to use in house anywhere

To clean mineral & soap residue from the tub & bathroom tile, I use elbow grease and Bar Keepers Friend. With Roto-Scrub, the work is easier and faster! I recommend also getting the Roto-Scrub brush, to clean textured areas and grout & caulk lines.

Reduces time and effort vs. hand-scrubbing, but still requires an effective cleaning product, and the weight of the drill can wear on your hand, wrist, arm, and even shoulder after a while, especially if cleaning vertical surfaces, and/or using a large drill. The pads can also gum up and wear down relatively fast if there is a lot of deposits. Some Tips and Observations:

PADS: There's no difference between the blue and white pads other than the color. You shouldn't have to apply a lot of pressure for the pads to work. Excessive pressure will wear down the pads (and your arm) relatively quickly, can overheat the drill, and could scuff or scratch the surface, depending upon the surface and cleanser used. I had no issues using the pads on a glass shower door, glazed ceramic tiled walls, and plastic basin. If the pad gums up, flip the pad and use the other side. If they are otherwise still in good condition afterward, throw them in the wash with your rags and/or rugs. Air dry.

DRILL: 18-20-volt drills/drivers work well, but their size and weight can be cumbersome and can wear out your arm and wrist fairly quickly, especially if using on vertical surfaces. Consider a compact 18-volt drill, or even better a 12-volt drill (see photos). The smaller size and weight makes them easier to manipulate and handle, and most of today's 12-volt models produce the torque and power the larger drills did just a few years ago. I find using at higher speeds works best. Have at least one extra fully-charged battery on hand.

BIT EXTENSION: Because the pad holder attaches right at the end of the drill, you have to work relatively close to the surface you're cleaning. Some spattering occurs (although less than most brush-type attachments). To reduce spattering on yourself and drill, consider a bit extension. The pad holder will fit into standard bit extensions, which typically range from 2 to 12 inches in length (see photos for examples). It can also help to reduce bending, and aid in getting at hard-to-reach areas.

CLEANING PRODUCTS: You may want to try a relatively safe cleanser first, e.g., Scrubbing Bubbles, etc. If that doesn't work, or there are significant hard water deposits (lime scale), you will likely need an acid (low pH) due to the base (high pH) properties of lime scale. Vinegar breaks up and dissolves the scale. Consider a solution of 95% vinegar (a mild acid), and 5% dishwashing liquid (surfactant). This is effective for lime scale/soap scum/body oils, and is less likely to damage surfaces, skin, eyes, or lungs vs. harsh cleansers.

Avoid harsh cleansers, e.g., KRC-7 Ultra and other products that contain sulfamic, sulfuric, phosphoric, and/or glycolic acids. They can damage surfaces including glazed tiles, metals, etc., your drill, as well as damage or severely irritate your skin, eyes, and respiratory system (especially in small rooms/confined areas). Also, chlorine bleach has little effect on hard water deposits.

Avoid home-made concoctions that call for both vinegar (an acid) and sodium bicarbonate (baking soda), which is a base. An acid and a base simply neutralize each other. The resulting reactive byproducts from this concoction are water, carbon dioxide gas, and sodium acetate, which has no significant cleaning properties. Also, baking soda itself has no appreciable effect on hard water deposits, because both have base (high pH) properties.

Spray/soak the surface with cleaning product and let it soak awhile (note: unless you're using a harsh cleaning product, which could damage the surface if allowed to sit). You may also want to add more product just prior to using the pads. Rinse the surface immediately afterward. Repeat the process if necessary.

Regardless of what you use, consider eye/face protection along with non-porous gloves (e.g., nitrile), and long sleeves. Also consider an appropriate respirator. (I use a MSA half-face respirator with acid gas cartridges when using vinegar.) As a minimum, turn on the exhaust fan and/or open the window(s) if available.