The title borrows the old saying that cleanliness is next to godliness, and the poem quietly pushes back against it. Its first idea is that a home with no dust at all would be "full of lack." Dust, the poem suggests, is a sign of living: people moving around, time passing, things being used. A spotless house feels more like an empty one.
The second stanza is stranger. Eyes "like stones" turn "into ore," which seems to describe something dull or closed off becoming raw material, something valuable that can be worked and shaped. Perhaps it hints at how dust and earth are made of the same stuff as minerals and metals, so even something lifeless holds potential.
The last image is gentle and playful: a child experimenting in the garden, getting dirty and discovering things. The speaker seems amused and approving, not bothered by the mess. The mood is calm, curious, and warm, with a light sense of humor behind it.