Negligence is a 'legal cause' of damage if it directly and in natural and continuous sequence produces or contributes substantially to producing such damage, so it can reasonably be said that if not for the negligence, the loss, injury or damage would not have occurred.
Soak the sponge for 30 minutes. Drop the sponge into the dish of soapy water. Squeeze it two or three times with your hand, then allow it to soak for approximately 30 minutes. The dish should have enough water in it to completely cover the blender sponge. If there isn't enough water initially, simply add more as needed.
Learn how to make delicious juices with a high speed blender [I am using Vitamix 5200 blender], it is especially helpful if you do not own a good quality juicer. Juicer are rich in concentrated nutrients and are a great addition to green smoothies.