Homemade solution…don’t have pets.
Whether they are indoor or not they can still get fleas. There is no homemade solution for these critters that I would trust.
I sort of went through something like this but with ants. From ppl telling me to sprinkle talcum powder to baking soda to cinnamon. Honestly it didn’t do anything but make a mess :(
I decided vacuuming them up was the best option until I found the right insecticide. My vacuum on the other hand is a Rainbow® and all dirt and debris it picks up goes into a bin of water which helps me because it drowns bugs on contact. My husband bought me this before he died it is the best cleaner I’ve ever had.
I have also heard that buying the flea collars do nothing, and the pet store flea liquid is bad.
You can get pills or liquid from the vet. My dogs were on pills and then we were told the pills only inhibit eggs to hatch and do not kill adult fleas as my cat (indoor) was the only pet to have fleas! Also the pills have a slight drawback, and they have side effects that are not nice. I stopped those when I found all that out.
I ended up using Frontline, until I could no longer bear the expense of it for 3 animals. They have not (knock on wood) had fleas. These are some good tips on e-how