AIBU to assume I can use their shampoo/shower gel when visiting?

[Smudge612]

I don't mean rummaging in their bathroom cupboards or anything , but for example, we have shower gel, shampoo & conditioner out on the side of the bath (shower over bath job). I would assume guests would use them if they needed when they stay at mine - and am happy for them to do so. Is it wrong to assume I can then do the same thing if I stay over somewhere???

Two things-
Never assume that a product is what the label says it is! I decant stuff all the time.
Neither of my DSs will share a toothpaste tube. They would gag if they thought someone else had used theirs.

People can be very individual, always best to ask first.

I'm a lodger who lives with a family. Grandparents came to stay and my supply of shampoo and conditioner ran out within 4 days. These are those huge Tresemme bottles. Was thoroughly pissed off.

That was out of order. They were not your guests.

I've just stayed at my sis in laws and I wouldn't dream of not bringing my own toiletries. She has a lodger too so there'd be no way of knowing whose is who's.