This is a residential and commercial cleaning company.. The name of the company is True Sparkle cleaning. The only tag lines I thought of were:
1.cleaning made easy.
2. Where your cleaning needs come true.
Can you please help me with a better line/slogan? Thanks

Gleam and glow -- that's how you'll know.
We'll dazzle you!

What do you think of the ones I mentioned?

Not at all catchy or memorable. You need a tag line that connects with and reminds a person of "sparkle" -- like, "Oh, yeah, that Sparkle cleaning company."

If this was your company what would be your tagline?

We'll dazzle you!

What about the ones I came up with?
The other sparkle is In your eye
It's all we leave behind
We stand behind our sparkle
The sparkle to count on
Our name is our promise
We outsparkle the rest
We dazzle your wold

Whatever works for you. It needs to be short and punchy and memorable. If I were you, I'd make a list of your favorites and pas it out to strangers, friends, and family members as a "check your favorite tag line" survey.