Tips:1) Use a special bubble solution. Your own DIY foam may not create rich foam. 2) Charge the battery (4 hours) before first use. A single charge can be used multiple times. 3) There is no need to stick too much bubble solution to prevent the bubbles from sticking. Moving your arm while the bubble gun shoots the bubbles can help with this situation. 4) It is not recommended for children under the age of three to use alone.