'Tis the season ... to tip.

But who should you tip and how much should you give them?

Here are a few guidelines to navigate tipping season:

Apartment Building Staff
Suggested Tip: $20 to $100

Dog Walker
Suggested Tip: One Week's Pay

Landscaper/Gardener
Suggested Tip: Cost of One Visit

Housekeeper
Suggested Tip: One Week’s Pay 

Mail Person/Package delivery
Suggested Tip: Gift (U.S. Post Office and FedEx workers are not allowed to accept cash.)

Personal Trainer
Suggested Tip: Cost of One Session

Babysitter/Nanny
Suggested Tip: One Week’s Pay 

Hair Stylist
Suggested Tip: One Visit’s Pay 

Manicurist
Suggested Tip: Cost of One Session 

Massage Therapist
Suggested Tip: Cost of One Session 

Trash Collectors
Suggested Tip: $10 to $20 each  (CNBC)