I don’t know whether this is too general, but any time I’ve ever searched for a means of cleaning something extremely difficult to clean (e.g., getting antiperspirant stains/residue out of T-shirt armpits) and found a supposed “solution” involving any combination of household products (lemon juice, baking soda, vinegar, etc.) it never works. This makes me wonder, do the people who write this stuff actually try their supposed “solutions?”
I just cut skin tags off with a pair of nail clippers. Super fast, tiny amount of bleeding, but the “problem” was immediately solved!
I actually can get tomato sauce stains out of white t-shirts using one of those methods, but I guess this isn’t the thread for that!
Ditto with the nail-clipper instant skin tag removal.
Well, when they say “anywhere”, they mean ANYWHERE! 
I haven’t found those household cleaning products to work very well. Some of them may actually make the stain worse. Enzyme active and oxidizer cleaners may work better than common detergent but some stains are as permanent as tattoos.
Okay, I’ve always had this insurmountable problem folding bed sheet liners. Folding the pillow cases and sheets is easy. They are just rectangles, but the liners have that elastic, and I always end up with a grotesquely misshapen lump instead of anything resembling a neatly folded sheet.
So, one day, I found a video on line featuring a woman who said, “This is easy!!” She then proceeded to fold her liner into a neat, flat, perfect package! It took her like 30 seconds. Well, I think I watched that video 30 times, and each time I ended up with the same grotesquely misshapen lump.
By bed sheet liners, do you mean fitted sheets? Because yes, I’m completely unable to fold them neatly though I’ve tried several times. Most of the approaches seem to require a large flat surface to fold on and that’s usually not available. And since I’m usually just going to make the bed again that day, it doesn’t matter that it’s not folded neatly.
I don’t have that, either, but this woman was standing in the middle of a room with the sheet in her hands, and she folded it perfectly in 30 seconds with no surface at all! LOL
Well, the problem is storage because it takes twice the space when the fitted sheet is a “grotesquely misshapen lump”. 
I can get fitted sheets to fold semi-neatly, not perfect by any means but good enough to at least fit in a linen drawer. Basically you get it into fourths by tucking the fitted corners into each other, getting it as flat as you can, and then going from there.
Fitted sheets were a lot easier to fold back when only the corners had elastic. Now that the elastic runs around the entire edge, it’s a lot easier to implement the “wad it up in a ball” tactic than to actually fold the darn things.
I specifically look for the sheets that only have elastic in the corners. They are still out there and worth every penny to me. I’m with @Lumpy on the folding though. I can get them fairly neat but never as good as the videos.
One thing about those deposits is that if they sit too long, they will etch the glass. If nothing removes it, then I would guess you’re really seeing the etched glass rather than the deposits.
After years of trying “hacks” like this one, using bleach, soaking, etc., I finally hit on the foolproof, simplest, and easiest method: baking soda. Dampen a sponge. Pour liberal amount of baking soda onto sponge. Wipe baking soda onto stained container. Bam. Done. No stains. Why didn’t I figure this out years ago?
There’s a simpler solution: wrinkle release spray. It even comes in travel sizes. Works immediately and more effectively than steam on shirts, pants, and jackets, and you’re not wasting hot water and steaming up a bathroom.
I’ll have to try that. I can say that when you get really badly burned on mess in a pan, boiling some water and add a bunch of baking soda can help.
I also tried something i read in a thread in here awhile back: apply some baking soda to steak, leave for 15 min, rinse, cook. It did seem to tenderize it.
A surprisingly effective technique I’ve found is to remove what you can with basic scrubbing, and then leave the pan in direct sunlight for a day or so. Most of the black residue gets flaky and brittle and comes right off. Anything that doesn’t come off, wasn’t going to come off anyhow.
Even more simple is to spray straight water, and works just as well.
I usually take a small squirt bottle with me when I travel to mist my wrinkly clothes so they smooth out. But if I forget my bottle, a trick is to use the squirt function of an iron if one is available (like in some hotels). You don’t have to turn the iron on or anything. Some irons have a button on the handle which will spray a mist of water out of the front of the iron. Just use that to mist your clothes when you hang them up and many wrinkles will smooth out.
I used to spritz water on wrinkly clothes. It worked OK on minimal wrinkles on light clothing, but only if I really drenched the fabric, which meant a long drying time. It didn’t work at all on deeper wrinkles. I haven’t tried the dollar store wrinkle release sprays, but the name-brand ones I’ve used definitely work way better than water. From Consumer Reports:
The next day, we hung the severely wrinkled items from hangers and followed the Downy directions, which say to spray garments until they’re lightly damp, pull and smooth as needed, and let dry. As promised, the wrinkles fell from swatches and garments before our eyes, far more so than when we sprayed them with plain water (though not as thoroughly as when we hit them with a hot iron).
From what I’ve read, it’s the fiber-relaxing ingredients that make wrinkle release spray more effective than water. OTOH, water is certainly cheaper and more readily available.
Huh, I guess my clothes have never been wrinkled enough for the water not to work.
Screens and scratched DVDs are, according to the Internet talking heads, cleanable using toothpaste, cleaner and a smooth rag. I have had very limited success with this.