I have left mine out for the last 3 years! I empty it and flip it upside down, only because my inflatable lid deflates so causes it to dip and rain water gets in. Then come sprin I give it a good clean and fill it up. I did take my pump indoors for the last 2 years but thus year gone I left it out as I was heavily pregnant and couldn't carry it. But all still clean and works fine.