| 摘要 |
The present invention 10 discloses a chemically treated biodegradable material 32 having an image impregnated therein that is only viewable by absorption of uric acid. A mature image 26 is produced on the biodegradable material by reaction with urine 36 to become visible and is designed to encourage infants 12 to use the potty 14 when having to urinate. The present invention 10 reveals a dark outline or sketch of the actual image when reacting to water 38 only. This way the child 12 is still encouraged to make the effort to get to the potty. However, only when uric acid or urine 36 is detected by the present invention will bright and vibrant colors be revealed giving the potty training tot 12 an even greater surprise and even greater reason for wanting to see the images which form when he potties.
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