A hair dryer and a butter knife. Use the blowdryer to heat up and soften the caulking from around the tub or tile. Sometimes it will just pull up like a string sometimes you need to use the butter knife.I used bleach to really clean and disinfect the area before I re-do the job.Always test first on a spot that will NOT be seen.
Silicone (RTV) caulk is difficult to remove. Popular Mechanics has a useful article at http://www.popularmechanics.com/home_journal/how_to/4213124.html
To seal around a sink with silicone, clean the area thoroughly to remove any debris. Apply masking tape around the edge to create clean lines. Using a caulking gun, apply a bead of silicone along the edge of the sink. Smooth the silicone using a wet finger or a caulk tool, and then carefully remove the masking tape. Allow the silicone to dry according to the manufacturer's instructions.
Silicone gets into the wood fibers & is not easily broken down. Sanding may be the best answer
To remove silicone caulk from clothing, you can try freezing the garment in a plastic bag to make the caulk brittle and easier to remove. Once frozen, gently scrape off as much caulk as possible with a blunt tool, then treat any remaining residue with a commercial solvent like a silicone caulk remover or rubbing alcohol. Finally, launder the garment according to its care instructions.
Yes you can, but it is a cleaner job if you remove the old caulking (as much as you can) and reseal it with new caulk.
pull it out
Yes, hydrochloric acid can damage silicone caulking in an aquarium. It is best to use safer alternatives such as vinegar or a commercial aquarium-safe cleaner to remove lime scale without risking damage to the silicone sealant.
paint thinner
will medicare pay for old silicone breast implant removed
It is not stated in the question. But, assuming the caulking (tar and untwisted rope) has been used to seal ship or boat planking. Heat the old caulking and remove while hot with a flat hook or knife. If I've read the question wrong, then more information is required.
no its not but it does remove water and repells water
If you wish to remove silicone from wood, you should be able to just peel it off. It does not require a solvent. However, if you do need a solvent, I recommend vinegar.