I bought 2 cacti on clearance. I water them a tiny bit every few days

Cactus needs sandier soil and not as much watering as succulents. If you can leave the cactus in a small pot and plant that, you could keep it dryer and try it that way.

Yes, you can replant them in potting soil with your other succulents. I'm afraid you might be watering them too much though. Cacti and most succulents thrive in very dry conditions. I water mine once a week and very small amounts of water. Not like my regular house plants. I hope this helps you. Happy Holidays.

Over watering will kill them for sure, they rot! Buy a cati potting mix, wouldn't water more than once a month. They live in the desert! Once rot starts, they are done.

. reI wouldn't. In Wisconsin I bring my cacti outside in a protected area in a hot dry area of our porch. I only give them water once a week. This time of year, I bring them indoors in our sunroom, where they get light, but I don't heat that room, and it gets into the 50's. They are planted in gravelly sand, and I water only slightly every other week in wint

Cactus and succulents should be in cacti/succulent dirt. Regular potting soil doesn't have enough sand and so retain water longer which isn't good for the cacti/succulents.

use cacti and succulent soil only and make sure the container has drainage holes