Pure Heat is simply the freshest and most potent Estrus urine available on the market! Collection begins on October 25th and runs through the end of November to ensure that our breeding Does are in the peak of their Estrus cycles. Pure Heat is immediately sealed, refrigerated and then shipped directly to your door. Upon arrival, we recommend keeping it refrigerated until use, and thereafter. Pure Heat comes in an attractive, 4 ounce Aluminum spray bottle helping to ensure the freshness of the product and enabling you to get the most from your investment.