Is there anyway to control the stickiness of a lemon tree from spraying all over the room?:)

uhm, citrus should not be sticky. sticky could mean pests. I'd really search the tree

Please describe the "stickiness" and the "spraying" the tree is doing in more detail. I am at a total loss at the condition you describe. I personally have never heard of or seen this abnormality.

A Citrus that has aphids will have a sticky honeydew substance. If this is the case then you need to treat for aphids as aphids can kill the tree.