Nobody should be flushing condoms anyway. The better escorts empty the bedside bin between clients, it's not great to see an overflowing bin in the corner. Obviously not an option in hotels.
Yes I understand flushing condoms is not good for the environment, sometimes punters do head for the bathroom to dispose in the loo before I can stop them, but if I roll the condom off it's knotted, placed in a tissue and or a small plastic bag (I save plastic bags from packaging,shopping, or when touring happy bags), the bag then goes into kitchen bin. If outcall once again wrap in a tissue then ask if its ok to leave - a few have wanted me to take away the evidence.
When touring I double bag then go for a walk , trip to shop or gym, dispose in a public bin outside the hotel. Some bookings are oral or manual masturbation only, some for a variety of reasons no sexual stimulation so no chance for overflowing bin in bedroom (my preference is zero biologically active content in bedroom bin).