Hi John! Thank you for sharing your experience. We reached out to you directly to find out what we could have done differently. The mosquitos can be pretty bad especially after we get a lot of rain. However, our guides are always equipped with bug repellent to prevent anyone from getting chewed up. We are sorry to hear your wife was affected by this. The mangrove tunnels are such a fun experience as our guests have a blast going through them and this is the first complaint we have received. While taking another route sounds enticing, our guests love the adventure. Thanks again for joining us.