As the title stated i have some sust. and some deca left over from a cycle that my buddy and i did a year ago. The bottle has been in a box secure from dirt and what not, but i wasn't sure if it was safe to use the rest of it on my next cycle which am about to start. I'm sure most of you have never experienced this because cycles are set up to use the whole bottle. I'm about to throw them away because i don't want to chance it. Any advice would be a big help!! THANKS!!