I recently acquired this kids play-set which is all plastic except for the wood bars on the climbing net - see below:
I've read the answer to this question but am still unsure about what I should use to protect the wood. The set is about 5 years old and the wood is very dry and has small cracks. There will be kids climbing on it (obviously) and it's going to sit out in the Arizona sun all day long. What would you recommend I use to treat or seal these wood pieces and how long after treatment is it safe for kids to use?