Quoted from flipnout1:Buy an Escalera and get the Big Wheel Attachment BWA-1. Now you are set for stairs and the grass.
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Escalera Dealer
Ditto. I have one the 1200lb one with the second strap and kickout wheel attachments (Not the big wheel attachment). I can't imagine collecting without it now. I can safely bring games up and down stairs without bugging people to help me