Rug doctor and Vac detergents (Leigh)

Carpet washing detergents Rug doctor and Vac

Two bottles of carpet detergents for carpet washing vacuum cleaners.
Bigger bottle 4 liters, half empty, on photo black line highlights current liquid level. Second bottle 1.5 liter, unopened. Both bottles have been standing under my sink for at least 8 months. But there is no expiry date on them, so I think they are still usable. I'd appreciate if both were taken together, as a set.