Surely not, lol, in the yars there are my clean brushes waiting for getting taken. My dirty ones are on a piece of newspaper and get cleaned every day after painting. The intermediar cleaning I do with a brush cleaner solvent and the the brushes stay on my table, but when a painting is completely done, they get cleaned even with a special soap at the end and only then they are allowed to go back into the yar at the window. I'm really strict with that, lol. Among the brushes there is also a chisel and there are knives in the other pot.