You must have LAVA and STEEL BLOCK to make JETPACK. JETPACK belongs to back category. Plant it in the morning, harvest in the evening. Not much exp to be gained from breaking this. How many times you need to hit it? Head to the wiki for more info: <a href="https://growtopia.fandom.com/wiki/Jetpack">jetpack</a> You get at least 1 seed back (maybe more!) from splicing JETPACK. Profiting with this might be questionable. Blockratio of JETPACK is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Jetpack">jetpack</a>