e872a21d_NA_Test_Kit_Acceptable_Samples__These_are_the_ones_to_obtain_
[Excellent Samples] Chewed Chewing Gum $240.00 [These are the ones to obtain.] 
Well chewed chewing gum works very well. Wrigley Juicy Fruit has been found to work best. Provide several samples of different types of gum if possible.
Home DNA Test Kit Acceptable Samples
These are the ones to obtain.