I've got a large rug (7 feet by 5 feet, or 2.1 metre by 1.5 metre) in my living room with a coffee table on top (see image below). As you can see, the rug keeps curling, particularly around the coffee table.
I've searched the web and all results tend to focus on keeping a rug flat when placed on a hard floor (such as tile or wood). But what about when it's rug on carpet?
I have tried duct tape, and that worked alright (until the adhesive wore off), but now I have goo left where the tape used to be.
Any way to keep it lying flat without ruining my carpet with duct tape?