Ground Solar Lights?
They should do, most are meant for outdoor use, the only thing that should stop them working woud be if they got water inside and it causes an electrical short, it should have been on the package what conditions they were suitable for, if you’ve thrown it away, you could maybe go back to the store and look at other packs of the same product, or ask the assistant. Hope that helps.
What can I use to get solar lights in the ground?
Even with “the pointer down the bottom ” on the landscaping lights, I use a Bulb Planter Bit/drill attachment, that I picked up at a store that sell Tulip bulbs. When placed in your cordless drill you can drill a perfect hole in the ground every time.