Just slice through stitches. Then replace cover and use the rubber head to remove thread tails by rolling the head along the unpicked seam. A tool as useful as a pair of scissors. Cut and remove threads with one tool.
Kai Seam Remover
Generic Seam Rippers in Sewing & Cutting Tools
Pk Ripper
Kai Seam Remover
Seam Ripper - Sew Sweetness
Seam Ripper, Seam-Fix - Dual Tips, Small and Large, Dual Seam Fix Thread Remover., 2-in-1 large & small seam ripper. , Specially formulated plastic
Moda Seam Ripper - Dual Tips Seam-Fix
Compact and handy tool that no sewist or quilter should be without to fix those seams. Seam ripper on one end and thread remover on the other. , Color
Seam Ripper and Thread Remover, Double-Sided
Dritz Seam-Fix Double-Sided Seam Ripper
MJTrends: Seam-ripper Notions