Be careful about relying on meta tags to optimise your web sites. It used to be important, but now virtually no search engines take any notice of them. Google, for instance, ignores them completely. The thing to understand is that there are about 1.9 million sites competing for the term 'Office Cleaning' here in the UK. Getting to the top of that lits is extremely technical, very hard work, and generally expensive. To get right to the top of the tree, you need Pay Per Click, but handled wrongly, it can cost you a fortune.