I bought a package of the laundry sheets for my daughter who was traveling up and down Europe last summer for a month or so. She didn't want to check baggage and only pack the minimum of clothing. I bought a different brand than the one you have pictured, but I bought it from Amazon. My daughter's review of the laundry sheets was that it was light and easy to pack and carry. They made sink hand washing easier than carrying pods, liquid or powder detergent around and didn't set off alarms at the numerous airports and customs centers she had to process through.

The cleaning ability of the laundry sheets was "eh". She felt she would have of had cleaner hand washed clothes if she had packed a bar of Dr. Bronner's soap and washed her clothes with that instead.

Anyhow, they certainly have their place in the world and serve that purpose, and for that, I would buy them again due to them being slim, light and not a pain to cart around.

She left her remaining laundry sheets behind in London with a little note on them instructing what they were in case some other traveling student found a need for them.

I bought some of whatever brand is sold on amazon for a trip. The description at amazon did not say it had enzymes, which it did (stated on the box), so I returned It. Other than that, I had read good enough reviews that I was hopeful. She should be fine, unless she will be rolling around in mud, climbing rocks, and similar activities. The convenience is great.

The Dr, Bronnners is a soap, IIRC, so may leave a scum residue in the clothes if the water is hard?

Yes Cavium about Dr. Bronner's being scummy. Very scummy, just like Ivory bar soap. My daughter's priorities are such that soap scum doesn't bother her when it comes to cleaning odors and oils from clothing while traveling and living out of a backpack. :) She uses Dr. Bronner's liquid soap for her daily shower all over when not traveling. I can't use it; too harsh. We did use the liquid Dr. B's while on vacay for a week years ago when I found out our resort did not offer washing machines (!) to wash clothes by hand in a sink and our clothes were fresh and clean. I was pleasantly surprised, but the liquid doesn't travel as well as laundry sheets or Dr. B's bar soap.

RiteAid and a few other drug stores, sell Tide Sink Packets. They are little like sachets with enough liquid tide to do a load of clothes in the sink and are carryon friendly. I'd prefer those over any "sheet" product offered, tbh. You could also fill a little shampoo bottle with Liquid Laundry Detergent.

https://www.amazon.com/Tide-Travel-Sink-Packets-3-Count/dp/B000GCS004

I use powders, so when we travel I pack a baggie with what I need plus a little plastic measuring scoop, and I'm good to go.