I think its a little early to be using estrus still, I think it couldn't hurt though in case a Buck is ready to chase Miss Doevember. I am using Tinks superlure and trophybuck urine right now, and it worked on drawing in my first deer. which was a button buck but i was happy with it. I personally am a fraid of over hunting my spot before the rut. but I can't help it, every day i want to load up my stand.