How do I stop a shag mat from shedding?

My mother bought a black nylon shagged mat for her bedroom, and after three washings, the blasted thing is still leaving a trail of carpet tufts under her feet and on the hallway carpet. Does anyone have a solution to stop this mat from shedding?

Have you tried either hair spray, or silicon spray?

Oriental Area Rugs, Fit Modern Hand Tufted Rug by spacify

5×8 Surya Hand Tufted Shag Plum Brown 5000 Area Rug – Approx 5′ x 8′ $660.00

2×8 Runner Surya Hand Tufted Shag Ivory Soft 5011 Rug – Approx 2′ 6″ x 8′ $363.00

2×8 Runner Surya Hand Tufted Shag Silver Soft 5010 Rug – Approx 2′ 6″ x 8′ $363.00

5×8 Surya Hand Tufted Shag Silver Soft 5010 Area Rug – Approx 5′ x 8′ $660.00

Contemporary 3×5 Ivory Hand Tufted Shag Area Rug New $48.55

Contemporary 4×6 Vanilla Hand Tufted Shag Area Rug Carpet New $80.95

Contemporary 4×6 White Hand Tufted Shag Area Rug New $80.95

Royal Elegance Oat 8×10 Large Hand Tufted Soft Shag Rug 3018 $299.95

Contemporary 6×9 Chocolate Hand Tufted Shag Rug New $181.75

Contemporary 8×10 Ivory Hand Tufted Shag Area Rug New $286.15

4×6 Surya Hand Tufted Shag Ivory Soft 5011 Area Rug – Approx 3′ 6″ x 5′ 6″ $350.00

2×3 Surya Hand Tufted Shag Ivory Soft 5011 Area Rug – Approx 2′ x 3′ $113.00

Contemporary 9×12 Vanilla Hand Tufted Shag Area Rug New $388.75

4×6 Surya Hand Tufted Shag Silver Soft 5010 Area Rug – Approx 3′ 6″ x 5′ 6″ $350.00

2×3 Surya Hand Tufted Shag Silver Soft 5010 Area Rug – Approx 2′ x 3′ $113.00

2×3 Surya Hand Tufted Shag Gold Soft 5008 Area Rug – Approx 2′ x 3′ $113.00

5×8 Surya Hand Tufted Shag Orange Soft 5007 Area Rug – Approx 5′ x 8′ $660.00

Hand Tufted Area RUG CARPET Shag Aqua 3×5 $159.00

Hand Tufted Area RUG CARPET Shag Aqua 5×7 $399.00

Hand Tufted Area RUG CARPET Shag Aqua 8′ RND $699.00

Hand Tufted Area RUG CARPET Shag & Flokati Beige 5×7 $399.00

Hand Tufted Area RUG CARPET Shag & Flokati Beige 4′ RND $169.00

Hand Tufted Area RUG CARPET Shag & Flokati Beige 8′ RND $699.00

Hand Tufted Area RUG CARPET Shag Brown 3×5 $159.00

Hand Tufted Area RUG CARPET Shag Brown 4′ RND $169.00

Hand Tufted Area RUG CARPET Shag Brown 8′ RND $699.00

Hand Tufted Area RUG CARPET Shag Mint Green 3×5 $159.00

Hand Tufted Area RUG CARPET Shag ivory 3×5 $159.00

Hand Tufted Area RUG CARPET Shag lime 3×5 $159.00

Hand Tufted Area RUG CARPET Shag ivory 8×10 $899.00

Hand Tufted Area RUG CARPET Shag lime 8×10 $899.00

Hand Tufted Area RUG CARPET Shag & Flokati Oatmeal 5×7 $399.00

Hand Tufted Area RUG CARPET Shag & Flokati Rust 5×7 $399.00

Hand Tufted Area RUG CARPET Shag Apple Green 3×5 $129.00

Hand Tufted Area RUG CARPET Shag Apple Green 5′ x 7′ $279.00

Medley Textured Shag Grey Rug (6′ x 9′) $233.74 This hand-tufted shag rug offers luxurious comfort and unique styling with a tuxtured pile with a salt and pepper medley of thin and thick strands.

Hand-woven Silken Silver Shag Rug (2′ x 3′) $25.07 This hand-tufted shag rug offers luxurious comfort and casual styling with an ultra soft satiny look and feel.

Medley Textured Shag Grey Rug (5′ Round) $107.94 This hand-tufted shag rug offers luxurious comfort and unique styling with a tuxtured pile with a salt and pepper medley of thin and thick strands.

Hand-woven Silken Ivory Shag Rug (6′ x 9′) $233.74 This hand-tufted shag rug offers luxurious comfort and casual styling with an ultra soft satiny look and feel. The polyester pile features an Ivory background and provides one of the most silky feels available in a rug.

Hand-woven Silken Sable Brown Shag Rug (2′ x 3′) $25.49 This hand-tufted shag rug offers luxurious comfort and casual styling with an ultra soft satiny look and feel.

Hand-woven Silken Chocolate Brown Shag Rug (2′ x 3′) $25.49 This hand-tufted shag rug offers luxurious comfort and casual styling with an ultra soft satiny look and feel.

Hand-woven Silken Ivory Shag Rug (5′ Round) $99.87 This hand-tufted shag rug offers luxurious comfort and casual styling with an ultra soft satiny look and feel.

Medley Textured Shag Platinum Rug (7′ Square) $211.64 This hand-tufted shag rug offers luxurious comfort and unique styling with a tuxtured pile with a salt and pepper medley of thin and thick strands.

Medley Textured Shag Beige Rug (3′ x 5′) $65.44 This hand-tufted shag rug offers luxurious comfort and unique styling with a tuxtured pile with a salt and pepper medley of thin and thick strands.

Hand-woven Silken Chocolate Brown Shag Rug (5′ Round) $112.19 This hand-tufted shag rug offers luxurious comfort and casual styling with an ultra soft satiny look and feel.