Without a doubt, you have scale insects on your ficus. They are often very difficult to see, even when you know what you're looking for. Spray with the soap and water, you can add a tsp of alcohol to the mixture also. Spray up onto the bottoms of all the leaves and stems, until the tree is dripping. You may want to put a cloth of some sort under the tree to catch extra water. Clean the sticky stuff off the floor too. Do this spraying once a week for a month. You should find the stickiness diminishing until its gone, then you know all the scale is dead.