washing soda may be near the caustic soda so make sure you get the right onethe stuff you see in the supermarket might be washing soda, which is not the same
Gloves too - if you find yourself thinking "hmm, my fingers feel a bit slippery" that'll be your skin dissolving.Be extremely careful when using caustic soda, full eye protection is a must
Next to the four candlesSeen some today on my local hardware suppliers counter.
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