18 September 2022: They've now gotten 3 months of use. They do still work, however some of them will only stay lit for about 4 hours no matter how much direct sun they get. :( I even swapped places with different lights now that the direct sunlight path has shifted for the season, no change. I put out around 24 of them; a third won't stay light for more than 4 hours or so (from about 730pm-midnight); another third make it to about 2am; the remaining *barely* make it to about 430am. I've also made sure grass and dirt do not block the sensors. It's a bummer they don't last as long but I'm still please with this purchase! The good news is, they provide path guidance for the times that I need it. And anything in the middle of the night or before dawn gets lit up with motion solar lights I purchased. I'll update again in a few months, but in the meantime I think you'd also be pleased with these little ground lights!!26 June 2022: I've had these disk solar lights for about two weeks now. Overall, so far so good. Mainly purchased to have guidelights at entrance to the driveway--the streetlamp is old and dying but they won't replace it until it's totally dead--so it's very dark especially when I dont feel like turning on my porch lights that attract lots of insects! I was adamant on COOL white, not warm lights, which made my search slightly more difficult. There were plenty of extra solar disks so I've put them in several other spots to see what works for me. The ones with 6+ hours of direct sunlight stay fully bright throughout the entire night; the ones with 4+ hours are bright halfway through the night and are medium to dim at dawn; the ones in shady spots with 2+ hours of daylight have remained dim from dusk through dawn! I've already had several big rainstorms, and they all still function very well, with only the shady spot disks running out of battery about two hours before dawn. After rain, I walk out to wipe their tops if muddy/spotty so they'll charge better for next use. Overall pleased between price & function, and I intend purchasing another set or two for more solar fun & to have a few spares.I got these first night I noticed 2 didn’t work which was fine because I didn’t actually need them all. Slowly but surly they all started to die. As of today I have one remaining and it’s very dim now. 2 months of use isn’t enoughI have these for about two weeks.Maybe later I might be able to update.All seems to be working fine, bought these I guess the same as many to light up the dark path at home.Something as these factories got out many light products these specifically are great but when all is dark these are so good that blinds a little and you can't see the path, and only because you know is right there in between them.So I'm planning to change them and use these in a different wayBought end of July and not even 2 months later they are all completely rusted, and do not work!They are cheapI had taller solar lights, but the family cat thought they were his toys and would pull them out of the ground and disassemble them. So I bought these and they are great. They fit snug to the ground and are much brighter than the other ones. They are not 100% cat proof, but almost. I highly recommend these lights to everyone who wants to light their paths.Greats lights! However, the case which holds the lights started rusting a few weeks after installed . Can’t do anything about it.I put these in my front yard several months ago. They've lit up every night without fail. They look great. I'm considering buying more for the backyard.Love these. I love that I can use the stacks or not. I move them around to where I need them. The five I put up last year are still works and are as bright when we first got them.