Help! Roots sneaking out of drain holes and slits!

[LinhT]

I don't grow catts but I've seen some pics of their roots and they do look bigger than roots on oncs but smaller than phal roots. This year, I got some different high drainage plastic pots with slits that are narrow enough to keep onc roots in. As for the bottom drainage holes, I used an old window screen and cut out a circle the right size to fit into the bottom of the pot. I'm no expert but it's saved me from repotting every other month.