Just fed him supper and he wolfed it down, pardon the expression... as advertised, there was apparently no bad taste to the product.
I read more on the packaging and you shouldn't need to buy more. Half a packet, twice a day for 5-6 days (I'll do 6) -- so that uses 6 packets and you'll have 6 left in case the problem starts again. The dose then will be 1/8 packet per day for two to three weeks. "You should see a response after the first or second day".