Pre-dipping is one of the best ways of reducing environmental mastitis and TBCs, killing bacteria present on the teats before the cow is milked. It is becoming more
and more popular as milk buyers impose stricter hygiene rules and many farmers are seeing the significant benefits for themselves.

Also, having a pre-cleansing routine increases the rate of milk let down. The hormone Oxytocin is required to enable a cow to fully let down the bulk of her milk. A sucking calf or a gentle pre-milking routine is the only way for the cow to release this hormone and let-down her milk more fully. If a milking machine is placed on the cows teat without her receiving stimulation then it is only the left over milk which will leave the teat. Disinfectant is applied just before milking and teats must be wiped clean before the cluster is attached. Teat disinfection should be carried out throughout the year to keep infections at bay. 

Post-dipping is of major importance in controlling contagious mastitis. It kills bacteria present on the teat end, which has been transferred onto the liners from the previous cow milked. It also kills bacteria in teat sores and can improve teat condition. Post dipping or spraying must be carried out as soon as the cluster is removed, whilst the teat canal is still open.

Dip or spray? It is vitally important that bacteria is removed from the whole of the teat, not just the teat end. For this reason, best results are achieved by dipping, although spraying can be effective if carried out thoroughly. Dipping also uses less product than spraying. Spraying is effective, but must be carried out conscientiously. Spray should be applied from the bottom of the teat in a circular motion to ensure total coverage. A barrier teat dip will give the ultimate protection against environmental bacteria in-between milkings.