The best way to remove small amount of nail varnish is with acetone.
- Put some acetone in a dish
- Dip a cotton bud and dab it on the nail varnish
- do not over wet the area with acetone or it will spread, or come in contact with the backing as it can de-laminate the fibres from the backing
- Carefully blot and re-apply until it has all gone
- Rinse area after
On big areas, contact a professional carpet cleaner
By Neil Kelloway on Google +