What can I use for fertalizer explicitly life. I own small children that play contained by the fund courtyard? My yard wants help, the creeping charlie have taken control, crab...

My yard wants help, the creeping charlie have taken control, crab grass too. Need advice and support.
Answers:    Cow poo, horse poo, chicken poo are the organic fertilizers you can use. I wouldn't progress organic because that poo stuff is concerned of nasty to play surrounded by. I would go near the regular fertilizer that is not life.
Spot spray the weeds next to Round-up as it will bind with the soil etc. and remove weapons on contact.
Any regular fertilizer once watered in is protected for your kids. Organic fertilizers-- cow manure, but it can burn your grass, plus I'd to some extent have pelleted or little bit fertilizer for the kids to run on than cow manure, even if it is warmness treated. As to crab grass control, you will have to use a spray to take out that, which means you would want to keep hold of the kids off it a couple of days.