I thik I've read every thread since 2009 on here about uterine infections... So much good info. BUT - I would like some more detailed info about how to infuse. I understand her cervix will be open if in standing heat ( she is now) How close is the cervix to the opening now? In other words- how far do I need to go inside? I have a 60cc feeding syringe with a tapered tip ( 1 1/2" tip) would that be enough? Hubby is picking up 1/4" tubing at TSC - they had no weak kid syringes! Can I mitre the end of the tubing and sand it smooth? Any help is appreciated - I'm so scared to do this - and timing is crucial -she just started heat. Oh- we have Biomycin and Pennicillin. Which is best - and same dilution for both- as described in other posts?