Mitch,
..Welcome to the forum. 80 to 90 is way too hot. If you set them up in a cooler cage with limited ventilation and provide a large water bowl and a hiding container with damp substrate you will never need to mist.
CARE OF NEWBORN BRAZILIAN RAINBOW BOAS
Epicrates cenchria cenchria
By Jeff Clark
Brazilian Rainbow Boas (BRBs) make great pets. They are very hardy and typically grow to around 6 feet in length. Many BRBs have been kept in captivity for over 20 years. Their size is much more manageable and practical than many of the other Boas and Pythons. They do require high humidity. This is especially important when they are small. If kept too dry they will dehydrate. Minor dehydration will cause feeding and shedding problems. Major dehydration will kill them. Baby BRBs should be maintained with close to 100% humidity in their cages. This can be accomplished by using damp substrate and limiting the ventilation. They do require some ventilation but in cages with large screen sides or screen tops the humidity will rapidly escape from the cage. Ideal substrate material for little BRBs is paper-towels or newspaper. The advantage of paper-towels and newsprint is that it can be easily changed. Damp substrate will quickly grow mold. It should be changed often. BRBs drink more water and pass more liquid urine than most other snakes. Substrate that is kept in the cage too long will become contaminated with urates which are very acidic and this will harm the snake’s skin. Many people use mulch and chipped bark substrates. Some of these substrates are excellent but you should be careful not to use one that is too acidic or one from a garden center that may have parasites in it. I especially like the cocoanut husk chunks and chips substrates for BRBs. It is vitally important to not use cedar substrate. The oils in cedar and similar woods are toxic to snakes. Pine shavings and aspen shavings are also not suitable for BRBs. Did I mention that you should change the substrate often? BRBs require cages with a cool end in the low 70s and the warm end in the high 70s to very low 80s. If you keep them in cages that are too small to maintain a temperature gradient in the cage they should be kept with the entire cage in the mid 70s. Temperatures higher than 85 can quickly cause dehydration and death. Most reptile heating products are too hot for Rainbow Boas. These snakes are nocturnal and secretive. Using overhead lights to heat their cages will create too much stress for a BRB. Cage temperatures must be controlled with a proportional thermostat or a carefully set and monitored rheostat. Don’t guess what the temperature is down in the cage where the snake spends most of it’s time. Invest in good temperature measuring equipment and use it often to make sure you do not overheat your BRB. BRB temperature requirements are 10 to 15 degrees cooler than what is required for many other boids including Ball Pythons, Boa Constrictors and Burmese and Reticulated Pythons. People who try to keep BRBs hot like they keep their other boids often kill them. Extra care should be taken when transporting BRBs. If left in a closed car in the sun the temperature will rapidly rise and kill them. BRBs should be provided with caging with hiding spots so that they can avoid light and activity. Small plastic containers like margarine is packaged in with a small entry hole cut into the side of the container work well. Place substrate material such as damp moss or damp papertowels in the hiding container. BRBs need a waterbowl in their cage that is large enough for them to submerge. They will often soak in the water for several days before shedding. However, when they do not have a good hiding spot they may have to use the waterbowl for a hiding spot and spend too much time in the water. Adult BRBs can