^ A good thing to remember is that 99.999% of all the bacteria in the world are either beneficial or neutral. It is a much easier way to survive than pathogenic.
Side note: Did you know that kids whose parents allow them to play in the dirt and don't have the most spotless houses usually have much better immune systems. To much cleanliness can be just as bad as too little for a normal healthy child. So if your child eats things off the floor or out of the dirt, don't stress, it's probably good for them.
Heck why don't you join in with them, a hotdog's flavor is drastically improved with a little bit of dirt on it. 
Side note: Did you know that kids whose parents allow them to play in the dirt and don't have the most spotless houses usually have much better immune systems. To much cleanliness can be just as bad as too little for a normal healthy child. So if your child eats things off the floor or out of the dirt, don't stress, it's probably good for them.
Heck why don't you join in with them, a hotdog's flavor is drastically improved with a little bit of dirt on it. 
