Get a good flow on and I had 2 supers of foundation and a super of drawn comb, completly filled in 2 weeks. Awesome, just worrying that they will run out of space now. But luckily the weather is a wee bit cooler today.our first one went on 10 days ago, second one went on yesterday. We were totally gob-smacked that they'd drawn out and pretty much filled a super in 10 days. Good luck.