Should I clean this primary mirror (photo included)

[shiplu]

I bought this telescope about 9 years ago. Never cleaned it. I used it for the first 3 years. Then it was shelved all these years.  Now I opened it and saw the primary mirror is a dirty. I have read my posts in the forum on how to clean it. I gathered everything already. Before I go on cleaning I need an opinion from you guys, whether it's a good idea to clean it. 

 

This is how it looks now.

[PeterCPC]

Overdue a clean I would say.

Peter

[x6gas]

I'd say yes give it a careful clean.

[mikeyj1]

yes, it definitely needs it...but carefully, find and follow a procedure, as already said

[Ben the Ignorant]

It's an emergency. How is the secondary?

[jock1958]

Eeek!! Definitely clean it. Are those deposits fungus? 

Just take your time and follow the procedures you’ve already researched.

I agonised over cleaning the dew and pollen spots off my refractor lens last year, I eventually bit the bullet and restored it to its former glory. 

[Ruud]

Yes, you should clean that mirror.

You have enough dust there to clone the whole family.

[Guest]

Yup. 

[Guest]

How's your eye pieces?

[kirkster501]

Yes, at that stage it needs cleaning.

[kirkster501]

 

[Seanelly]

Give it a couple of standing soaks in mild soap and water if necessary, and get a cover for the end of the tube if you haven't one already to save yourself a repeat performance nine years from now.

[cletrac1922]

Use distilled water as well, as does not have rust, chlorine, fluoride that is in tap water

 

[Seanelly]

5 minutes ago, cletrac1922 said:

Use distilled water as well, as does not have rust, chlorine, fluoride that is in tap water

 

Yes, definitely distilled water. I don't think that's been mentioned yet, so good call.