Quote Originally Posted by bonk View Post
.................... I am still a little bit worried now. I spilled the used dillution into the kitchen sink.

After reading all this I already cleaned the whole kitchen twice (using plain water with dish liquid). Is this enough or should I do something else? How likely is it that I harmed myself. Are there any symptoms to watch out for now? I read a garlic taste in the mouth would such a symptome?
If you've done a good rinse down I doubt that you're in the slightest danger. Many people take a selenium supplement for health reasons and you might have just got a one or two day dose of selenium. The significant danger lies in frequent, regular exposure to something. That includes the foods that are well known to be not healthy.