buy gbl hardware store 

The sale of gammaButyrolactone (GBL) in DIY stores is extremely unlikely and probably illegal. GBL is strictly regulated or even banned in many countries due to its conversion to gamma-hydroxybutyric acid (GHB), a psychoactive substance with abuse potential. Regular hardware stores normally sell products for building and DIY purposes, but not specialty chemicals such as GBL. If you have special cleaning needs, you should use legal and safe cleaning products that are approved for consumer sale. These products usually meet the necessary safety standards and are suitable for home use. The illegal purchase and use of GBL can have serious legal consequences and health risks. It is strongly recommended that you act within the legal limits and comply with the applicable regulations to ensure your own safety.