wow! you people are actin crazy! I'm almost freaked out and I don't have the question. Look, they are right you don't need to spray them, if they are in soil you definity don't need a cup over your seedling thats rediculous. If it was a cutting I can see it, but not a seedling. Just give them some water, the smaller the container the better for seedlings in dirt. If you use like a plastic bathroom shotglass thing for a pot you could get away with watering 1-2 times a week if you put them in a 1 gal pot you might be watering a lot less and be careful with soil you don't want to many nutes in it.