i hate them,my daughter in law use them and gets pissed when i wont water her plants when they go somewere,told her a hundred times ,your problem with plants start right there,wont listen ,so goes and spends about 300 every year in spring on plants,month later dead,she says what do you do and why can you grow the same thing and i cant ,first i say the air bags,second i say the mind dont act with the body,she say what,yep i say,you walk by them plants twice a day and say i need to do something or water at least,the body finds the couch and the plants find a compost pile