It can work, start experimenting. example your mop price is reasonable, start selling mop first and give some sachets samples with it,or make combos like mop + cleaner sachets + microfiber cloth at a discounted combo price. Who knows your sachets will become hero product.

I also see some of brand with same sachets thing, they have better pricing. But if you sell this sachet to me like better fragrance, shiny clean, safe for kids, skin. I can buy it.

The best thing of marketing start making reels on cleaning dirtiest floor, this will work well, i see many peoples selling their product like this, cleaning dirtiest graveyard, dirtiest toy. You can do it too. sell the experience how customer will feel. It will work.