I've been told by frog expert at my usual pet store to never use bleach, no matter how small the amount, for obvious reasons. Even though there might be plenty of rinsing and dechlorinating, it still might end up bad. The owner said just plain ol' water and a scrubber and let the accessories air dry. Unfortunately, the log might have to go. The rocks might be ok with very thorough rinsing and as another posted suggested, as long as they're not porous, douse with dechlorinator on those. The log is too porous and probably already absorbed the toxins. Hope it helps! Good luck!