Sample of your lease clause for frequency of inspections?

[Lois S.]

My lease has a standard clause about entering the premises with consent of resident or with reasonable notice for repairs, maintenance inspections, etc.

I've read that "Although some states allow landlords to enter their rental properties to conduct general inspections, California is not one of them."

I'd like to have a lease clause that the tenant agrees to allow quarterly maintenance inspections - for the purpose of generally seeing how the unit is being kept.  Wording such as "Landlord reserves the right to etc. "  I may or may not actually do them that often, depending on the tenants.  

Would such a clause be legal if the tenant signed/initialed such a clause in California? 

If you do this, would you care to share the wording you use?

Thanks.