If you purchase the metal frame mesh lid and then also four of the metal lid clamps (usually sold in sets of 2 and rated for the size of the tank) you should be fine. Our daughter's milksnake can get out of anything but she can't move that and believe me she'd tried. The lid for a 10 should run you about $10.00 and I believe the clamps round about $3.00 a set. Just make sure that you squeeze them slightly so that when you snap them on they are almost hard to afix and you hear a distinct snap sound as they lock down on the frame on the tank.