My husband was staining our deck which was above the paver patio. He dripped some stain on the patio. Is it possible to remove the stain and if so how? Also, we have one rust spot on the paver patio. Is there anything that can get this out as well?

The rust is the easy one. Go to the laundry aisle in the grocery store and buy a bottle of Wink. It is normally used to remove rust in laundry but it works on concrete. Morton Salt also makes something called Raze for removing rust in softer systems. The stain is going to be tough because in soaks into the concrete's surface. What kind/type,name stain did he drip? Olympic makes a deck strain remover but I think you will need to soak and blot the concrete several times.