The 3/8 in. Holeplug is screen-sized bentonite composed of a naturally occurring clay which is used to seal and plug earthen boreholes. The 3/8 in. Holeplug material will travel through water standing in the hole and reach the bottom of the hole with minimum hydration or swelling (100% of the particles pass through 3/8 in. screen; all particles retained on 1/4 in. screen).

Please Note: A refundable $35.00 pallet deposit is required on purchases of 1/2 pallet or more. The deposit will be refunded upon return of the pallet.