Can I Dig It? is a medal in Plants vs. Zombies: Battle for Neighborville. It is awarded for discovering a Secret Invoice.
I'm on the trail of Leigh K. Faucette--Neighborville's first plumber! If I find all six of her buried invoices, I'll find the site of her final unfinished gig! I bet it'll pay out BIG!
- Quest Log of Eve Strough
In order to collect the secret invoices, you need to use the associated telescopes first to reveal them (a mound of dirt will then show up). Collecting each secret invoices give you 3 tacos and 125 coins, and collecting all of them will unlock the ancient plumbing gig side quest, which is necessary to unlock the Clog Day Afternoon medal.