I was wondering....the cd&t bottle say's that once you use it that you should throw it away. I keep it once I use it and store it in the frig until I use all of it. Should I buy a new bottle every time I need to use it or is okay to keep using the same bottle until it's all gone? Also, can it harm the goat if I overdose? I realized after I gave my buck his that I accidentally overdosed him by 1ml. he's been fine since I did 2 months ago, but I was wondering what could happen if its overdosed?