Disposable Maple Spiles &ndash; ( Pack of 25 ) &ndash; Clear One-year Sap Taps &ndash; Zero Residual Bacteria - 5/16&ldquo; Tree Saver Seasonal Spouts - Food Grade Plastic - Maple Syrup Sugaring Tapping Supplies Use of these seasonal taps eliminates the possibility of residual bacteria remaining from year to year on your taps. Residual bacteria can inhibit the sap flow and slow the healing of tree. 25 Clear 5/16  One Year Disposable - Maple Tapping Spiles. Make your own Maple Syrup! These Tree Saver sized spouts can be used with our 5/16 food grade tubing. These spiles can also be used by attaching a bucket or container directly onto the tap. Drill a 5/16 drill bit into the tree 1  into the tree and gently tap in the spile.