anyone ruined a barrel with sweets or other?

[hofts]

just curious if anyone has ruined a barrel while cleaning with any form of cleaner.
thanks


i have left sweets in for over 30 minutes before, i don't have a bore scope so i don't know if i have any damage, but i sure can't tell so far. it looks great and shoots great. will 30 minutes with sweets ruin a barrel or not. i did of course follow with large amount of hoppes to (neutralize) it or so i thought.