I am always asked ‘how bad are the mosquitos in Costa Rica’? They are not that bad most of the year here is Santa Teresa, with May and October being the worst. If you can get some Citronella Joss Sticks and bring them with you or some oil and burn at dawn and dusk. This is the only time they come out. What we do is get into this habit when we get up or when we are having a sunset drink. Best repellant here – Family Off Lotion….but my favourite suggestion is to get some citronella essential oil from the pharmacy, put it in a small spray bottle mixed with ylang ylang and put on ankles and wrists……doubles up as tropical perfume too!