They need reason beyond doubt to do so.
IF they smell ganja, YES
IF they see alcohol out in the open and minors, YES
IF they see drug paraphernalia, YES
IF they see POSSIBLE drug making equipment, YES
IF they think theres POSSIBLE drug usage there, YES
IF leo's k9 bark at your house and raises the fact theres possible illegal drugs or firearms. YES <-- and this is the worse thing to happen.
so keep some pets, have birds, cats, dogs. Anything that will take k9's attention away. Having a pet within the house when a k9 goes off would make it harder for them to obtain a search warrant as the house pet is a HUGE variable to consider.
always with beyond reasonable doubt. so... don't give them a reason for it.
My chillout hangout area is towards the back of the house, that way visitors and what not will never know, plus smell will be taken care of back there. All cannabis related items stays within that room where my paper work would be posted up on second door behind the first so they would HAVE to read it before entering.
Also when opening the door to speak to leo, close it behind you, He shouldn't ask why you closed the door, if he does say you have a dog and you do not want it to run out or any mishaps.