I purchased Bioshield Penetrating Wood Oil Sealer from Green Building Supply. I already knew the quality of the product, as it was what was used as the coating/sealer on my timber frame home. What I didn't know was the speed in which I would receive it from this company! I ordered it mid-morning and by 3pm I received an email that it had been shipped. In 48 hours from ordering, and 31 hours from the shipping time, it had arrived. That is AMAZING service!