
Ask what others services are offered and if there is anything they don't do.
Often cleaning services will charge more for the initial cleaning in order to get the home up to par and then the standard rate each time thereafter.
The cost per visit for weekly cleaning is usually much lower than the cost per visit for bi weekly or monthly cleaning.
Be sure to let them know if you would prefer certain products or to avoid other products. You may want to provide your own if you prefer a brand, or scent, etc...Some people love the smell of bleach and ammonia, some like lavender and pina colada, and others prefer fragrance free....just communicate your preferences and gauge their willingness to accommodate you.