We LOVE our bubble scoops around here!!! Add a small bubble scoop, crush it up and add the crumble into the mesh organza bag (included) and place under running water to agitate and make bubbles. Nothing but bubbles with these scoops!! 
1 Small scoop is perfect for 1 bubble bath. 
1 Large scoop is perfect for 2 baths OR 1 really bubbly bath.