Do ya sell soil for indoor cat grass.I have the seeds just need the soil to grow the indoor cat grass n my container

Yes

Just make sure to purchase all natural soil without fertilizer, it is specific because you are not supposed to use any artificial fertilizers for the car to be exposed to.

Any soil mix with perlite mixture will work. Perlite contains water more and longer than typical potting soil or topsoil. Make sure the bottom of your container if it's not watertight . put a layer of stone for drainage in the bottom