[sophotect]

@Mi5tahclean
I looked up how lihia is made... https://ph.answers.yahoo.com/question/index?qid=20070614111659AAzhoju
That recipe sounds like it would result in primarily potassium hydroxide so I would expect it to be suitably caustic for your purpose.

Again: Don't make the lihia yourself or mix it with industrial grade chemicals.
The supposed toxicity of lye is not the issue here, it is the toxicity of the unknown ingredients.

Lye is very caustic, but as long as it is pure, of limited concentration, & fully reacted in the recipe, the products are non-toxic.

BTW, no chemical in existence is inherently safe. I'm still shocked by how many people die each summer after being dared by radio DJs to drink the most water to win an X-box.

Make a few small runs & see what happens!