Q: My landlord’s novice repair person caulked around the bathtub — twice. Both times, the caulk pulled away from the wall.

How long after you lay fresh caulk must you wait to use the tub again? The duration depends on a few factors, including the type of caulk you use.

Then use your knife or tool to scrape along the tub or shower floor. Photo 2: Loosen and remove the remaining caulk. Squirt ...